[CLOSED] Selection jiggles while resizing window horizontally

[core-ai-bot]

Issue by redmunds
Thursday Jul 19, 2012 at 15:13 GMT
Originally opened as adobe/brackets#1283

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Recipe:

1. On any page, find/create a line of text with > 60 chars
2. Select roughly the middle 1/3 of the line of text
3. Change the width of brackets app

Results:
The painting of the selection highlighting briefly changes with the width of the window (seems to be a percentage of viewport width). It quickly snaps back to the correct size, but there is enough delay to make it very noticeable.

Expected:
Selection highlighting does not change with editor window width

This seems to be caused by recent CodeMirror changes.

[core-ai-bot]

Comment by peterflynn
Thursday Jul 19, 2012 at 16:41 GMT

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Definitely a regression from the last CodeMirror merge. Probably same cause as #1267. Marijn has already pushed up a fix for that, so I'll test whether it covers this case too.

[core-ai-bot]

Comment by peterflynn
Thursday Jul 19, 2012 at 16:51 GMT

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Confirmed this is now fixed in CodeMirror upstream -- next sprint's CM merge will give us a fix

[core-ai-bot]

Comment by pthiess
Tuesday Jul 24, 2012 at 17:48 GMT

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Reviewed thats opened for Sprint 12. Waiting to get the fix in CM.

[core-ai-bot]

Comment by peterflynn
Thursday Aug 02, 2012 at 17:25 GMT

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The CodeMirror merge has been deferred to Sprint 13 due to some recent instability in the CM scrolling code. Pushing this bug out till then.

[core-ai-bot]

Comment by peterflynn
Tuesday Aug 21, 2012 at 21:17 GMT

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This seems much harder to reproduce in brackets-shell, but it's definitely still there (noticeable especially on my older Mac).

[core-ai-bot]

Comment by njx
Thursday Aug 23, 2012 at 18:38 GMT

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Turns out the fix in CodeMirror (which we've merged) doesn't fully fix this case, though it does reduce how often it happens. I've filed codemirror/codemirror5#745 on this, so we can continue to track it. Removing sprint 13.

[core-ai-bot]

Comment by gruehle
Thursday Sep 20, 2012 at 22:07 GMT

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This is fixed in CodeMirror v3 branch. See codemirror/codemirror5@314e7ea

[core-ai-bot]

Comment by redmunds
Saturday Jan 26, 2013 at 00:42 GMT

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Confirmed that this is fixed in cmv3 branch. Closing.