Dropdown list has thick left border

[srirambv]

Did you search for similar issues before submitting this one?
Yes

Describe the issue you encountered:
Dropdown list has thick left border

Expected behavior:
Border should be same on all the sides

• Platform (Win7, 8, 10? macOS? Linux distro?):
  Windows 10 x64

• Brave Version (revision SHA):

Brave: 0.13.0 
rev: 0c7a64d6917b6e7e72d074b05e1d7488466418a9 
Muon: 2.0.8 
libchromiumcontent: 54.0.2840.100 
V8: 5.4.500.41 
Node.js: 7.0.0 
Update Channel: dev 
os.platform: win32 
os.release: 10.0.14393 
os.arch: x64

• Steps to reproduce:

  1. Open any drop down list in pref page all of them have a thick left border

• Screenshot if needed:
  

• Any related issues:
  cc: @bradleyrichter

[bbondy]

@srirambv can you confirm if this is also present in 0.12.15?

[srirambv]

Here's how it looks on 0.12.15

Issue specific to 0.13.0

[bsclifton]

Possible issue details captured here https://bugs.chromium.org/p/chromium/issues/detail?id=395425
I have a fix, working on incorporating it now...

[bsclifton]

OK it appears this issue is NOT caused by #6258, since it happens when not maximized.

The possible fix I had mentioned above does work (fix being pass Brave.exe two extra params; --high-dpi-support=1 --force-device-scale-factor=1)... but it works by forcing the Brave window to render at 100% DPI. It's important to note that this fix does NOT work at 200% (and also, the window is so small it's unreadable).

The magnification is expected- Chrome 54 introduced that (in 53 and prior, 125% or less DPI were hardcoded to 100%, avoiding this issue completely for those resolutions).

It appears there is a larger issue with DPI which causes this to happen which needs to be investigated.

[bsclifton]

Confirmed this was fixed with brave/muon@30fd6ff 😄

[luixxiul]

Please remove the milestone and add labels QA/no qa needed and release-note/exclude if this appeared and was fixed within the same milestone, thanks!

[bsclifton]

@luixxiul labels updated; keeping milestone for tracking purposes