SUMMARY

When a specific Breeze Plasma style is selected in the System Settings (Appearance > Plasma Style), such as "Breeze Dark" or "Breeze Light", Kickoff button lacks the top border color and animation when it is opened. However, the border is displayed correctly when the Plasma style is set to "Breeze" (the one that follows the color scheme).

In other words, when selecting a global theme such as "Breeze" or "Breeze Dark", the border is shown. However, if "Breeze Twilight" or a specific Breeze Plasma style is selected, the problem appears.

STEPS TO REPRODUCE
1. Open System Settings.
2. Go to Appearance, then Plasma Style.
3. Select "Breeze Dark" or "Breeze Light" (no matter the current color scheme in Colors).
4. Open Kickoff, either by clicking or with the Meta key.

OBSERVED RESULT

Kickoff button lacks the top border and animation when it is clicked and the menu is opened.

EXPECTED RESULT

Kickoff button should have the top border and animation when it is clicked and the menu is opened, like with the "Breeze" Plasma style (the one that follows the color scheme).

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Kubuntu 22.10
KDE Plasma Version: 5.27.4
KDE Frameworks Version: 5.104.0
Qt Version: 5.15.6

ADDITIONAL INFORMATION

I wasn't sure where the bug belonged and if it was a problem with Breeze or with Kickoff itself, so I preferred not to choose a product ("I don't know" category). Feel free to reassign it to the correct category.