When I enter a STAR or runway (at RJTT in my case), this happens. I notice it happened to another user in the A340 forum too so clearly not type-specific.
Recently updated to SU4 on MSFS2024 so probably that since this has been working fine for the last 2 weeks that I've used it daily.
I reinstalled it and did the delete WASM folder thing the first time. This is after full reinstall.
Thanks for assistance,
Dan