How to reproduce:
- Open ExtMFD
- Select e.g. the Orbit Instrument
- Press TGT button multiple times
- Affects ExtMFD and ExternMFD-derived classes
- MFDs in generic cockpit and virtual cockpits are not affected
- Can cause Orbiter to crash. Looks like it's corrupting memory then ...
- Catch button events (e.g. from the dialog) and inhibit calls to ExternMFD:
rocessButton at the right time. (Not tried yet.)
This bug has been reported frequently by people who are using my plugins. I finally figured out, that this must be an Orbiter bug.