It crashes due to SAB building settings cache and ... uhm some handwrinting ink recognizer partially removed? Search in settings would also crash here I believe.
You can create Start_SearchPCSettings = (DWORD)0 in HKCU\Software\StartIsBack to workaround that
Capture a crash dump, video is unhelpful.
1) Import this registry key http://startisback.com/Enable_Crash_Reports.reg
2) Create C:\dumps folder
3) Crash
4) Send me dmp file from C:\dumps folder
Google DontUsePowerShellOnWinX. It's supposed to be in HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced
Look on Twitter. There are search box on taskbar plus more dark mode plus bugs.
I've implemented search box, test if you're interested
https://startisback.com/StartAllBack_setup.exe
Not implementing pill, globe, s*** on stick or whatever.