setLatency behaviour seems not to work correctly on LV2, not at all on VST

[TheOnlyJoey]

Behavior on the lv2 latency example plugin seems to be incorrect. Even though it seems to be synced/corrected, it waits the amount of latency before it starts moving the playhead (so with 5 seconds, it waits 5 seconds before it starts doing anything) and when bypassing during playback, it jumps the playhead with the amount of seconds delay in the plugin. Also when jumping the playhead it still plays part of the old buffer before stopping, filling up and then playing from where it started.

The VST plugin just does not do anything with the latency set, I expect something not behaving correctly in the implementation.

Tested with Ardour 6.3 and Reaper 6.15 on Linux.