Preview webview won't change title when switched to another problem

[Vigilans]

🐛 Bug Report

As the title describes.

To Reproduce

Open preview window on any problem:

Keep the window open and click another problem:

Expected behavior

The title should change when switched to another problem.

[jdneo]

@Vigilans Thank you for raising this. In the next version 0.13.1 we can address several bugs as a stable release.

New features can be held on for the 0.14.0.