Repo Details does not show all mirrors, its a scroll within a scroll

• Device OS and version: Resurrection Remix 7.0.2
• Device model/manufacturer: Xiaomi Pocophone F1
• F-Droid version (in the About screen): 1.7.1

These are a few small issues that are probably an easy fix so I grouped them in one report. Note the screenshot below.

1. When adding multiple user mirrors, only one is visible. The list is a letterbox size frame that needs scrolling to see the others.
2. It is not possible (or perhaps I did not figure it out yet?) to remove a user mirror.
3. It is still using the main f-droid.org mirror even when explicitly disabled and app restarted. I disabled all mirrors except my own user mirror and found zero entries in the server logs. A repo refresh confirms in the notification it is being pulled from f-droid.org.