Entire uBlock pop-up GUI not visible #1254

Prerequisites

• I verified that this is not a filter issue
  • Filter issues MUST be reported at filter issue tracker
• This is not a support issue or a question
  • Support issues and questions are handled at /r/uBlockOrigin
• I performed a cursory search of the issue tracker to avoid opening a duplicate issue
  • Your issue may already be reported.
• I tried to reproduce the issue when...
  • uBlock Origin is the only extension
  • uBlock Origin with default lists/settings
  • using a new, unmodified browser profile
• I am running the latest version of uBlock Origin
• I checked the documentation to understand that the issue I report is not a normal behavior

Description

[Description of the bug or feature]
The main POP-UP GUI is only partly visible on screen. Thelocation of the POP-UP GUI depends on where in the tool-bar the uBlock icon is displayed.

A specific URL where the issue occurs

[A specific URL is MANDATORY for issue happening on a web page, even if it happens "everywhere"]
N/A

Steps to Reproduce

1. [First Step] Click the uBlock icon in the tool-bar
2. [Second Step]
3. [and so on...]

Expected behavior:

[What you expected to happen]
To see the entire uBlock GUI on the screen.

Actual behavior:

[What actually happened]

Your environment

• uBlock Origin version: 1.29.2
• Browser Name and version: Google Chrome is up to date, Version 85.0.4183.102 (Official Build) (64-bit)
• Operating System and version: Microsoft Windows [Version 10.0.18363.1016] (Windows 10 x64, Ent. Eng.)