Topics scrollbar not updating due to CSS customizations

Support
1

I think I’ve broken something on my discourse installation - scrollbar is no longer updating when scrolling.
i.e. the indicator 1/25 changes to 2/25 and then remains at 2/25 for the remaining 23 posts. Also the URL of the topic no longer updates to ...../<post_number>

In the javascript console I can see strange error messages:

_ember_jquery-0ae86c…ee94f26d9c3.js:5106 [Violation] Added non-passive event listener to a scroll-blocking 'touchstart' event. Consider marking event handler as 'passive' to make the page more responsive. See https://www.chromestatus.com/feature/5745543795965952
_ember_jquery-0ae86c…ee94f26d9c3.js:5106 [Violation] Added non-passive event listener to a scroll-blocking 'touchstart' event. Consider marking event handler as 'passive' to make the page more responsive. See https://www.chromestatus.com/feature/5745543795965952
_ember_jquery-0ae86c…ee94f26d9c3.js:1975 [Violation] 'setTimeout' handler took 886ms
[Violation] Forced reflow while executing JavaScript took 79ms
_ember_jquery-0ae86c…ee94f26d9c3.js:5106 [Violation] Added non-passive event listener to a scroll-blocking 'touchstart' event. Consider marking event handler as 'passive' to make the page more responsive. See https://www.chromestatus.com/feature/5745543795965952
_ember_jquery-0ae86c…e94f26d9c3.js:61218 [Violation] 'click' handler took 167ms
[Violation] Forced reflow while executing JavaScript took 45ms
```

Any idea how to debug this issue ?

Many thanks

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2

You will need to provide a link (preferably) or the full error for us.

3

Please try this one

4

When I use the safe mode to deactive the theme modifications, it works well : https://discourse.mfc.bayern/safe-mode

Probably a script that breaks the timeline

5

actually it looks like it is a CSS breaking the timeline ! If I remove loading of https://www.mfc.bayern/assets/css/headerfooter-style.css then it works
Any hint how a CSS may break the timeline (which I assume is javascript based) ?

6

You you change the heights in the wrong place, it will break the JS that detects scrolling.

7

which heights ? searching for height in the CSS yiels 140+ results :frowning:

8

OK found it
html,
body {
height: 100%; }

1 Like
9

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