[BUG]: Focussed read feed not hidden on "Show unread items only"

[larsen0815]

Brief description of the issue

Feeds > Show unread items only
When a feed has only read articles, but is focussed, it won't be hidden instantly.

How to reproduce the bug?

1. Have some feeds
2. Select a feed with no unread articles
3. Select "Feeds > Show unread items only" from the menu or press "U"

What was the expected result?

All the read feeds should be hidden, including the focussed one. Focus should switch to the next element.

What actually happened?

The focussed feed remaines visible. Only after selecting another element from the tree will it be hidden.

Debug log

n/a

Operating system and version

• OS: Windows 11
• RSS Guard version: 4.8.1