Fix sidebar layout on mobile screens

[supfiger]

Steps to repro:

• Watch the video https://monosnap.com/file/6NcwSNtDnBfYjTV34EbPWe1xc1psha

Expected behavior:

• Elements don't overlap each other

Environment:

• device: iPhone X
• OS: IOS 15+
• browser: Safari

[ehuss]

Screenshot just to capture from the remote site.

With the sidebar visible, slightly scroll the body up. Then drag the body to the left.

[ehuss]

This should now be fixed via #1994 in 0.4.26.