# Calendar back runtime
**URL:** https://meta.discourse.org/t/calendar-back-runtime/372331
**Category:** Bug
**Tags:** events
**Created:** [June 30, 2025, 8:48pm UTC](https://meta.discourse.org/t/calendar-back-runtime/372331 "2025-06-30T20:48:55Z")
**Posts on this page:** 15
**Page:** 1
### Author:  [@Ethsim2](https://meta.discourse.org/u/Ethsim2)
#### Post date: [June 30, 2025, 8:48pm UTC](https://meta.discourse.org/t/calendar-back-runtime/372331/1 "2025-06-30T20:48:55Z")
Hi,
I hope you can reproduce, i have updated my discourse, and on pressing back after the second (or later) on the browser when browsing Upcoming Events, runtime is excessive
This deosn’t seem a major bug to me, you can just close the PWA and re-open, but i feel better to make a bug report now than later
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### Author:  [@sam](https://meta.discourse.org/u/sam)
#### Post date: [June 30, 2025, 11:21pm UTC](https://meta.discourse.org/t/calendar-back-runtime/372331/2 "2025-06-30T23:21:46Z")
How many event do you have?
Can you share some information from network tab in Chrome, is there some network activity running in a loop?
Can you share some screenshots?
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### Author:  [@Ethsim2](https://meta.discourse.org/u/Ethsim2)
#### Post date: [July 1, 2025, 7:32am UTC](https://meta.discourse.org/t/calendar-back-runtime/372331/3 "2025-07-01T07:32:39Z")
> [@sam](#):
>
> How many event do you have?
about 70 in events plugin and 12 in calendar (and event) plugin
> [@sam](#):
>
> Can you share some information from network tab in Chrome, is there some network activity running in a loop?
i’d need to use a desktop/laptop since apple webkit is being used in the Safari PWA where this bug occured.
> [@sam](#):
>
> Can you share some screenshots?
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### Author:  [@sam](https://meta.discourse.org/u/sam)
#### Post date: [July 1, 2025, 8:07am UTC](https://meta.discourse.org/t/calendar-back-runtime/372331/4 "2025-07-01T08:07:24Z")
Is there an error in the console?
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### Author:  [@Ethsim2](https://meta.discourse.org/u/Ethsim2)
#### Post date: [July 1, 2025, 8:20am UTC](https://meta.discourse.org/t/calendar-back-runtime/372331/5 "2025-07-01T08:20:55Z")
none today, i have experienced this bug today
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### Author:  [@sam](https://meta.discourse.org/u/sam)
#### Post date: [July 2, 2025, 12:01am UTC](https://meta.discourse.org/t/calendar-back-runtime/372331/6 "2025-07-02T00:01:57Z")
Let’s hold a few days on this, @j.jaffeux is working on an upgrade for the full calendar control. It may (or may not) resolve this issue as a side effect.
We are quite a distance away from the current version of[this library](https://fullcalendar.io/). An upgrade my sort out some quirks.
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### Author:  [@Ethsim2](https://meta.discourse.org/u/Ethsim2)
#### Post date: [July 15, 2025, 8:02pm UTC](https://meta.discourse.org/t/calendar-back-runtime/372331/8 "2025-07-15T20:02:51Z")
Hi Sam,
Thank you for your response. I really like the new system.
As my copy of Discourse nears sync’ing with University events on this calendar system, this is an issue that would be particularly annoying.
If i’m going through the maths in different topics and accessing it through this calendar each evening, ideally i don’t want to be refreshing or opening/closing the PWA
As a Physics student, i’m not particularly skilled in Discourse programming yet,
it would be nice to know how far we are through the implementation of the library?
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### Author:  [@sam](https://meta.discourse.org/u/sam)
#### Post date: [July 15, 2025, 11:36pm UTC](https://meta.discourse.org/t/calendar-back-runtime/372331/9 "2025-07-15T23:36:55Z")
We have a PR for the fullcalendar upgrade in progress (and finished), hoping to land it some time next week.
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### Author:  [@j.jaffeux](https://meta.discourse.org/u/j.jaffeux)
#### Post date: [July 17, 2025, 9:14pm UTC](https://meta.discourse.org/t/calendar-back-runtime/372331/10 "2025-07-17T21:14:07Z")
> [@sam](#):
>
> hoping to land it some time next week.
Noting, that we will do our best but for various reasons (release timeline, handling side effects of these changes in other projects), it might be in August.
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### Author:  [@j.jaffeux](https://meta.discourse.org/u/j.jaffeux)
#### Post date: [September 15, 2025, 5:52am UTC](https://meta.discourse.org/t/calendar-back-runtime/372331/11 "2025-09-15T05:52:34Z")
Fixes on this have been merged and your situation should feel better once you update, let us know how it goes please.
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### Author:  [@Ethsim2](https://meta.discourse.org/u/Ethsim2)
#### Post date: [September 15, 2025, 7:49am UTC](https://meta.discourse.org/t/calendar-back-runtime/372331/13 "2025-09-15T07:49:56Z")
Hi, I’ve been running into something that looks related.
- Environment: iPhone , iOS \< iOS 18.6.2 (22G100) \>
- Discourse: \< [latest-release +296](https://github.com/discourse/discourse/commit/dc8d00c9509e5a06af9e62f66d730a4f3c6823be)\>, self-hosted with default theme
- Symptom: When installed as a Safari PWA (Add to Home Screen), the app consistently collapses the calendar after
1. opening left side panel
2. press “Upcoming events”
3. press \> multiple times
4. notice collapse to the side, so page needs to be refreshed
So far this points to a Safari PWA/WebKit interaction, rather than a component/theme problem.
Recording: I’ve captured short repros of
1. Normal Safari (works)
2. Safari [Safe Mode](https://meta.discourse.org/t/53504?silent=true) (works)
3. PWA (collapses)
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### Author:  [@Ethsim2](https://meta.discourse.org/u/Ethsim2)
#### Post date: [September 15, 2025, 7:56am UTC](https://meta.discourse.org/t/calendar-back-runtime/372331/14 "2025-09-15T07:56:55Z")
> [@Ethsim2](#):
>
> PWA (collapses)
* * *
my last couple of attempts to reproduce didn’t yield an issue
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### Author:  [@Ethsim2](https://meta.discourse.org/u/Ethsim2)
#### Post date: [September 15, 2025, 11:29am UTC](https://meta.discourse.org/t/calendar-back-runtime/372331/15 "2025-09-15T11:29:34Z")
just reproduced this issue on a desktop, chromium, but pressing the back button on FullCalendar did solve the problem;
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### Author:  [@j.jaffeux](https://meta.discourse.org/u/j.jaffeux)
#### Post date: [September 16, 2025, 8:58pm UTC](https://meta.discourse.org/t/calendar-back-runtime/372331/16 "2025-09-16T20:58:19Z")
Yes I have seen a few times, not sure yet what is causing this, will dig.
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### Author:  [@j.jaffeux](https://meta.discourse.org/u/j.jaffeux)
#### Post date: [September 26, 2025, 8:58pm UTC](https://meta.discourse.org/t/calendar-back-runtime/372331/17 "2025-09-26T20:58:25Z")
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