Created attachment 156820 [details]
Image of Dolphin with mis-resized Titlebar

SUMMARY
I recently updated my system to the new Plasma 5.27.1 and began noticing issues with the Titlebars of applications.
A few minutes after boot, the Titlebar stops being resized correctly when I resize its window.
Directly after boot or resume this does not occur.

STEPS TO REPRODUCE
1. Boot ArchLinux with Plasma 5.27.1
2. Wait 15 minutes
3. Open Dolphin
4. Resize Dolphin 

OBSERVED RESULT
The Window resizes correctly, but its Titlebar does not.

EXPECTED RESULT
That both the Window and Titlebar resize correctly.

SOFTWARE/OS VERSIONS
Operating System: Arch Linux 
KDE Plasma Version: 5.27.1
KDE Frameworks Version: 5.103.0
Qt Version: 5.15.8
Kernel Version: 6.1.12-arch1-1 (64-bit)
Graphics Platform: Wayland
Processors: 8 × AMD Ryzen 7 4700U with Radeon Graphics
Memory: 30.7 GiB of RAM
Graphics Processor: AMD Radeon Graphics
Manufacturer: TUXEDO
Product Name: TUXEDO Aura 15 Gen1
System Version: Not Applicable

ADDITIONAL INFORMATION
Screenshot of a mis-resized Titlebar is attached.