fix: update theme correctly and show dropdowns correctly

[VmMad]

Description of change

Fixes #1042
Fixes #1041

Type of change

• Bug fix (a non-breaking change which fixes an issue)

How the change has been tested

Theme change should work in the first attempt.
Dropdowns in mobile should be the same as in desktop

Change checklist

Add an x to the boxes that are relevant to your changes, and delete any items that are not.

• My code follows the contribution guidelines for this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes