Use auto scrollbar size for all scrollbars except the side nav

[kommunarr]

Use auto scrollbar size for all scrollbars except the side nav

Pull Request Type

• Feature Implementation

Related issue

#321, #346, #3057 (sets higher sensible default addressing the usability issues referenced)

Description

Uses default platform scrollbar size for all scrollbars except the side nav (where it's too much of a headache to address at this time). Also implements a behavior to have the scrollbar size increase on hover (which includes the side nav). Hopefully should help most users having issues with the scrollbar being too small. If people's needs still aren't adequately addressed by this come v0.21, we can go forward with adding a new setting as requested in #3057.

Screenshots

Without hover:

With hover (in this case, the rightmost scrollbar):

With hover (in this case, the side nav scrollbar):

Testing

• Look at the side nav scrollbar and try hovering over it
• Look at any other scrollbar and try hovering over it

Desktop

• OS: OpenSUSE
• OS Version: TW

[absidue]

As the scrollbars are really wide now, maybe we could keep them at 6px and expand them to auto when the cursor is over the ::-webkit-scrollbar and ::-webkit-scrollbar-thumb? That would also make it possible to add it to the sidebar, as it would only expand when you are using the scrollbar.

[kommunarr]

Updated with your suggestion and some slight modification:

Without hover:

With hover (in this case, the rightmost scrollbar):

With hover (in this case, the side nav scrollbar):