Hi, It doesn’t show up with the thumbnail icon, it’s not rendered in the html either. I also tried the default discourse theme.
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I think you may need a freelancer to take a closer look.
I have had no other reports. Very strange.
Thanks, it’s not really mandatory for me. I’ll just disable it, I only asked here given I thought I was missing to do something else.
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Before I move on from this can you please share your console from this view? Any warning or something red?
Just to give you some clarity: the Theme Component is what provides the thumbnail selector UI but this is only activated if the plugin is detected.
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These are all the warnings in my logs, there isn’t anything in red at the moment.
Deprecation notice: `SiteSetting.min_trust_to_flag_posts` has been deprecated. Please use `SiteSetting.flag_post_allowed_groups` instead. (removal in Discourse 3.3) At /var/www/discourse/lib/site_set
10:19 am
Deprecation notice: `SiteSetting.min_trust_level_to_allow_user_card_background` has been deprecated. Please use `SiteSetting.user_card_background_allowed_groups` instead. (removal in Discourse 3.3) A
10:19 am
Deprecation notice: `SiteSetting.min_trust_level_to_allow_ignore` has been deprecated. Please use `SiteSetting.ignore_allowed_groups` instead. (removal in Discourse 3.3) At /var/www/discourse/lib/sit
10:19 am
Deprecation notice: `SiteSetting.min_trust_level_to_allow_ignore` has been deprecated. Please use `SiteSetting.ignore_allowed_groups` instead. (removal in Discourse 3.3) At /var/www/discourse/lib/gua
3:59 pm
Deprecation notice: `SiteSetting.min_trust_to_edit_post` has been deprecated. Please use `SiteSetting.edit_post_allowed_groups` instead. (removal in Discourse 3.3) At /var/www/discourse/lib/guardian/
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I’ve disabled majority of my plugins and tried three different themes under preview and it it didn’t show the selector so I’m unclear as to what could be the problem.
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Try a completely fresh install at some point (not for production) and see if you can replicative the issue.
So far I’ve been unable to.
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I also can’t reproduce it on my side. That’s odd. Looking at the code, it should be working as long as the TLP component and plugin are enabled. 
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Similarly, I get 2 different warnings.
this is one:
Message
Deprecation notice: `SiteSetting.min_trust_to_edit_post` has been deprecated. Please use `SiteSetting.edit_post_allowed_groups` instead. (removal in Discourse 3.3)
At /var/www/discourse/app/models/concerns/limited_edit.rb:19:in `trusted_with_edits?`
Backtrace
/var/www/discourse/lib/discourse.rb:1035:in `deprecate'
/var/www/discourse/lib/site_settings/deprecated_settings.rb:128:in `block (2 levels) in setup_deprecated_methods'
/var/www/discourse/app/models/concerns/limited_edit.rb:19:in `trusted_with_edits?'
/var/www/discourse/app/models/concerns/limited_edit.rb:7:in `edit_time_limit_expired?'
/var/www/discourse/lib/guardian/post_guardian.rb:177:in `can_edit_post?'
/var/www/discourse/lib/guardian.rb:670:in `public_send'
/var/www/discourse/lib/guardian.rb:670:in `can_do?'
/var/www/discourse/lib/guardian.rb:208:in `can_edit?'
/var/www/discourse/app/serializers/post_serializer.rb:165:in `can_edit'
(eval):34:in `_fast_attributes'
this is the other one:
Message (2 copies reported)
Deprecation notice: `SiteSetting.min_trust_level_to_allow_ignore` has been deprecated. Please use `SiteSetting.ignore_allowed_groups` instead. (removal in Discourse 3.3)
At /var/www/discourse/lib/guardian.rb:560:in `can_ignore_users?`
Backtrace
/var/www/discourse/lib/discourse.rb:1035:in `deprecate'
/var/www/discourse/lib/site_settings/deprecated_settings.rb:128:in `block (2 levels) in setup_deprecated_methods'
/var/www/discourse/lib/guardian.rb:560:in `can_ignore_users?'
/var/www/discourse/lib/guardian.rb:555:in `can_ignore_user?'
/var/www/discourse/app/serializers/user_card_serializer.rb:134:in `can_ignore_user'
(eval):15:in `_fast_attributes'
active_model_serializers-0.8.4/lib/active_model/serializer.rb:456:in `attributes'
active_model_serializers-0.8.4/lib/active_model/serializer.rb:480:in `_serializable_hash'
active_model_serializers-0.8.4/lib/active_model/serializer.rb:359:in `serializable_hash'
active_model_serializers-0.8.4/lib/active_model/serializer.rb:343:in `as_json'
Can you please elaborate on what this has to do with Topic List Previews?
I didn’t mean it was about Topic List Previews. I also encounter similar problems in the log section. I wrote that maybe the problems have something in common.
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Can you reproduce this users issue with TLP?
I’ve finally released a fix for this (on the sidecar):
Now when topic_list_enable_thumbnail_recreation_on_post_rebuild is set, normal Topic images should not be disappear 
(the image was never destroyed, only it’s optimized image which can be recreated on rebake)
This feature was intended to support recreation of thumbnails for YouTube embeds to eliminate letterbox borders.
(The interim workaround was to turn that setting OFF - it was in any case marked as “experimental”).
Sorry that took so long, it was on my list!
You will need to update the sidecar plugin to get this fix.
3 Likes
Another fix FYI, dominant colour presentation was incorrect when one of the RGB colour elements was zero - this is now fixed 
:
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Yeah, only enable this momentarily when you need it, rebuild the desired Topic Post, then immediately switch it off. It’s fiddly and probably should have a UI control on the Topic Post itself, but it makes for a much nicer view when you don’t have black borders on Youtube videos.
3 Likes
Hi, we’ve been using this theme component for a while and it’s really helpful for our community since it’s very visual heavy.
However, we’ve been running into performance issues with this plugin. When we turned it off, we went from 100% CPU and issues with loading the page to ~55% CPU usage.
Any idea on how we can keep the plugin on without the massive performance hit?
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Can you share how you configured the component? It might help to figure out the
context.
Did you notice the CPU spike the first time you installed this component?
2 Likes
I do not remember CPU usage when it was first installed unfortunately.
The Component settings I’ve overridden
- topic list tiles topic lists (removed all selections)
- topic list thumbnails categories - added 6 categories we want previews in
- topic list excerpts topic lists - (removed all selections)
- topic list actions topic lists - (removed all selections)
- topic list portfolio filter type - category
- topic list portfolio filter parameter - scripts category
The plugin seems to have no settings overridden except that we’ve turned it off for now.
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Your server’s CPU? Can you share your CPU specs?
I assume you mean with the sidecar plugin installed?
I checked a site with this running on a Raspberry Pi in Chrome and I couldn’t identify any specific performance issue locally on the client.
I have a VPS with 4GB running with both the plugin and the Theme Component on clients and a page refresh causes a blip to 25% on one core, but nothing more
2 Likes
