Well so far my solution for badly behaved plugins in Waveform is to untick the "show" checkmark in the plugins settings tab. This has been helpful in the cases where a manufacturer's VST3 plugin works, but not their VST2, or vice versa. Or with some that just need to be completely ignored.
In all fairness, it's not just a Tracktion thing. Plugin incompatibilities can happen anywhere. I recently tried to open a support ticket with Ableton for a plugin that was crashing Live, but they would not even consider it, because the plugin was no longer being supported by the 3rd party devs. Ableton support obviously has other priorities besides supporting end of life plugins.
I have reached the conclusion that there will always be occasional plugin incompatibilities with various plugins and certain hosts, so I think it would benefit all if most host developers built in better resilience to bad plugins, such as with automatic sandboxing.