So I've noticed a bug importing media items.
It might have to do with the recently introduced options to time-stretch based on embedded tempo info, but I tried turning off the options I thought were relevant.
As the LICEcap shows the Media Explorer is playing the item at a sensible playrate that works with the project tempo and is almost the items regular playrate, but when it's inserted into the project the playrate is halved (it's the same when dragged from the waveform preview as well).
The expected behaviour is that the playrate would both match the Media Explorer and use a matching value that keeps the item the least altered.
My guess is Reaper is assuming an incorrect number of bars as there was a similar issue when calculating project tempo from time selection.
Changing "measure beats" in the items playrate:set setting fixes the issue, but the Reaper should assume the correct number like the Media Explorer does.
I've also had another issue where imported tempo-matched selections will be slightly less than the expected 2 or 4 bars. I haven't had a chance to use Reaper much since late 5.x so don't know when these issues were introduced.
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FRs: v5 Media Explorer Requests,
Global Quantization,
Session View
Win10 Pro 64-bit, Reaper 6(x64), AMD 3950x, Aorus X570 Master, 64GB DDR4 3600, PowerColor Red Devil 5700XT, EVO 970 2TB, 10TB HD, Define R6