Avoid events boomeranging from frontend

[philippjfr]

This adds a long overdue change which ensures that events arriving from the frontend do not boomerang. There was a previous attempt at doing this but instead of skipping events being applied that originated on the frontend it cancelled the processing of new events after a property change was made. These approaches have potentially similar effects but in fact are quite different, since the old change effectively would potentially cause a property to revert to an older value.

Fixes #7096
Fixes #6738
Fixes #6414

[MarcSkovMadsen]

Will this solve issue with ChatInterface? I.e. the problem that if you don't type slowly then text will disappear?

chatinterface-text-disappearing.mp4

[philippjfr]

Will this solve issue with ChatInterface? I.e. the problem that if you don't type slowly then text will disappear?

I have never encountered that problem, the problem it is meant to solve is that the chat feed scroll position isn't stable.

[MarcSkovMadsen]

I will make a separate issue then.

[codecov]

Codecov Report

Attention: Patch coverage is 97.61905% with 1 line in your changes missing coverage. Please review.

Project coverage is 81.74%. Comparing base (1083ed2) to head (7e20bc8).
Report is 2 commits behind head on main.

Files	Patch %	Lines
panel/reactive.py	96.55%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7093      +/-   ##
==========================================
- Coverage   82.22%   81.74%   -0.49%     
==========================================
  Files         326      326              
  Lines       48548    48586      +38     
==========================================
- Hits        39920    39717     -203     
- Misses       8628     8869     +241     

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[philippjfr]

A reproducer would be very helpful. I definitely can't reproduce this with a bare chat interface.

[MarcSkovMadsen]

Hmmm. The problem is only with the deployed app. When developing on jupyter hub with proxy server there is no problem. That is strange as it should be the same. But I also experience my deployed apps being slower even though they have the same resources available.

I've had the problem "for ever". Thought everyone was experiencing it.

[philippjfr]

Yeah literally never seen it and we have many chat apps in production with different clients.

[duarteocarmo]

Hey @philippjfr any idea when this will be available? (I know 1.4.5, just wondering if there is a release date for that, or an option to release it sooner?)

Thanks!

[duarteocarmo]

We are observing the same issue as @MarcSkovMadsen in #7096

[philippjfr]

I was planning to cut 1.5.0rc1 today and then make the proper release some time next week.

[duarteocarmo]

Awesome - appreciate it. 👍🏻