1. Create a new project using the Normal project template, select the MIDI track and hit Alt+3 to open the PRV, and turn off Smart Grid.
2. Give the gobal snap and PRV snap different snap resolutions, then draw a note event, like this:
3. Move the note event and make sure the snap works fine, like this:
4. Then change the PRV grid resolution to a Triplet one (because it's easier to see the bug) and move the note event, like this:

It doesn't snap right. What am I missing?
And also...
5. Hit the N key twice to turn off/on the global snap, which now unnecessarily changes the grid resolution in the PRV, like this:
Can you confirm the bug?