Webview: sometimes loosing the scrollbar

[bpasero]

Refs: #7945

Not sure how I got into this state, but suddenly my right scrollbar is gone? This is on Windows 7:

[kieferrm]

Steps to reproduce:

1. open a markdown file whose preview is larger than the editor window
2. open markdown preview to the side
3. make a change in the markdown file

[jrieken]

Seems to be caused by our scroll bar customisation. When I remove that things are working

[jrieken]

This is an upstream issue but I haven't boiled it down to a small repo yet...

[Huachao]

repro with extension using 'preview.Html' command

[Huachao]

@jrieken @bpasero any updates on this, depending on electron?

[bpasero]

@Huachao you can try to repro from our insiders release where we since updated Electron:
You can give our preview releases a try from: http://code.visualstudio.com/Download#insiders

[Huachao]

@bpasero it seems the latest version didn't solve the issue at least for me

[Huachao]

@bpasero the electron update doesn't work, any updates, thanks

[mjbvz]

I believe that this was fixed by #19394, which worked around an upstream chrome issue where updating iFrame content could cause the scrollbar to disappear: https://bugs.chromium.org/p/chromium/issues/detail?id=678821

Also see #17617

Please try VSCode 1.9 and let me know if you still see this

Thanks