Can repro. Adding that turning off autohide shelf in fullscreen mode causes a little flash of visible background

By fullscreen do you mean a maximized window, a window in immersive mode (where the tabstrip will still be revealed when you hover your mouse cursor at the top of the screen), or HTML5 fullscreen (such as a web video)?

Max, can you clarify repro steps and check if this still reproduces when --ash-md is set to 'experimental' (be sure to check on a recent canary).

Yes, can still repro original issue + mine (sorry I meant maximized)

In latest canary on experimental do the following for my addition:
1. open chrome
2. maximize the window
3. auto hide shelf
4. un-auto hide shelf
5. see flash of the background as the resizing/shelf getting raised happens

This issue has been Available for over a year. If it's no longer important or seems unlikely to be fixed, please consider closing it out. If it is important, please re-triage the issue.

Sorry for the inconvenience if the bug really should have been left as Available. If you change it back, also remove the "Hotlist-Recharge-Cold" label.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Handing to zork@ for triage.

Min, do you know if this is still relevant?

I feel I can't repro the issue if I have correct understand of it. And we have many changes of the auto-hide shelf after this. Marked as wont fix first. Feel free to reopen if this is still an issue.