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Issue metadata

Status: WontFix
Owner: ----
Closed: Jun 2018
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Windows
Pri: 2
Type: Bug


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tab tooltips are tiny

Project Member Reported by wfh@chromium.org, Jun 17 2018

Issue description

Chrome Version: 69.0.3463.0 (Official Build) canary (64-bit) (cohort: Clang-64)
OS: Windows 10 Version 1803 (OS Build 17134.112)

What steps will reproduce the problem?
(1) Open a tab
(2) Float mouse over tab
(3)

What is the expected result?

Tooltips look normal size

What happens instead?

Tiny tooltips!

Also, I noticed attaching the image, that explorer window is small too.



Please use labels and text to provide additional information.


Histogram: UI.DeviceScale recorded 1 samples (flags = 0x41)
150  ------------------------------------------------------------------------O (1 = 100.0%)


If this is a regression (i.e., worked before), please consider using the
bisect tool (https://www.chromium.org/developers/bisect-builds-py) to help
us identify the root cause and more rapidly triage the issue.

For graphics-related bugs, please copy/paste the contents of the about:gpu
page at the end of this report.


 
tooltips.png
11.1 KB View Download
It looks like we're rendering a tooltip at 100% but you've set your system to 150%.

Does Chrome behave any better after a reboot?  If not, does Windows itself get this wrong anywhere, or just Chrome?  Finally, are tooltips only small for tab titles, or anywhere in Chrome that shows tooltips?

Comment 2 by wfh@chromium.org, Jun 18 2018

yes a reboot fixed it... but not restarting Chrome. Which is weird.

everything was small, including the explorer dialog shown within Chrome.

I don't think this will be reproducible unfortunately, so feel free to close as WontFix.
Cc: robliao@chromium.org
Status: WontFix (was: Untriaged)
IIRC changing the system scale factor doesn't correctly propagate within Windows until you restart.  Chrome can't do much here.

+CC robliao@ who knows more about this, in case he wants to clarify.

Comment 4 by wfh@chromium.org, Jun 18 2018

Well, I didn't change the system scaling factor at all during the boot-time of my machine - that's something I simply never change

However, I was doing full-screen gaming so it's possible something got confused in Windows there.
Yep, on #3, if an app changes the system scale factor, it can cause odd rendering sizes as observed in the screenshot. Tooltip rendering is handled by Windows in the end and we're at the mercy of the primary screen DPI on the size of the tooltips there.

The fact that Explorer is also rendering at 100% scale factor suggests a changed occurred. Do you typically run at 150%?

Comment 6 by wfh@chromium.org, Jun 18 2018

I don't know. I can check when I get home. I'll paste my UI.DeviceScale

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