Maybe Julian's script to insert empty beats is not being developed further, anyway here is a strangety I stumbled on.
I have a project that was not recorded to a click. Using SWS actions I have mapped the grid to the project, so I have lots of tempo markers. Now I want to insert empty space at the beginning while keeping the tempo markers. So basically I just want to copy-shift everything left. The script does exactly what I want to do... almost. There is this one MIDI item that becomes off-grid after the script is run.
In the gif above, we see that the top MIDI item is off-grid after running the action. As also seen, this is easily adjusted manually, so not really a problem in this case, but something is strange.
Reaper v6.43, W7x64, SWS 2.12.1.3 (Feb 6, 2021), script is v1.10 (2018-09-26).