Created attachment 269708 [details] [Animated GIF] Bug See the attached GIF.
<rdar://problem/24318706>
Didn't Devin fix this for all sidebars? Since we're removing this sidebar in the Timelines UI redesign, I don't think we should invest any time fixing it, if the issue is specific to the TimelineSidebarPanel.
Created attachment 270339 [details] [Animated GIF] Bug (In reply to comment #2) > Didn't Devin fix this for all sidebars? ... What was the bug URL? Styles sidebar and debugger sidebar (with probes enabled) are both affected. I can't reproduce it on Safari on OS X 10.11.3, so it's a regression.
Devin's fix was bug 152473.
From the animated GIF, it seems like there is contention between the minimum sidebar size and the maximum size. I suspect the maximum is smaller than the minimum, causing it to shrink when it is suppose to resize wider.
I have a bunch of classwork to finish up for next week, but I will take a look at this over the weekend.
Created attachment 270761 [details] Patch
Comment on attachment 270761 [details] Patch Clearing flags on attachment: 270761 Committed r196187: <http://trac.webkit.org/changeset/196187>
All reviewed patches have been landed. Closing bug.