Graphical glitch with M1 MacBook Pro

Hey Guys

Wondering if anyone has come across the problem where trend lines disappear when changing the Line Style to anything other than solid.

The following workaround worked with my previous set up (Older model iMac with Windows 10 via Parallels.)

I’ve upgraded to a M1 MacBook Pro and as such have to use Windows 11 via Parallels, however unfortunately the above workaround has no effect.

Any help would be awesome.