Icon Style options don't work reliably

[archivesilver]

Describe the bug
Under Apperance, in Theme section, Icon Style has 3 options: Material, Holo, Rounded. Icon style doesn't change in an understandable manner.

To Reproduce
Keep switching between Icon Style options, and it'll sometimes not do anything, sometimes randomly switch styles. Theme style is Material if relevant.

Expected behavior
Every Icon Style option should apply a particular style.

App version
v3.9.0

Device:

• Model: Xiaomi Redmi Note 8 Pro
• OS: Android 11 (MIUI 12.5, rooted)

[LeanBitLab]

the newly created icons are only for rounded, had to create new icons for each style in future