Do you have the same issue if you follow the OP’s steps to reproduce it?
Yes, exactly as described above.
Provide extra information to complete the original description of the issue:
It appears that the vertical AP modes continue to work while the indication remains as V-FP. On the other hand, when initiating an RNAV approach on the subsequent flight (with V-FP continuing to show), the AP commands an extremely steep descent & I have to take over & fly manually.
If relevant, provide additional screenshots/video: