First MIDI note in regions mysteriously vanish while doing operations in other regions/tracks

This has been going on for years through my many upgrades of both the Logic and System software. While working with MIDI, there is an annoying random disappearance of the first notes in MIDI regions. The deletions are discovered after working elsewhere in the sequences. This has been reported by others over the years. Right now I'm doing a big project and it's driving me nuts. Those notes need to be individually re-entered (after figuring out what they were in some cases.) As I said, the error is random and hence not repeatable. The only consistent thing about these occurrences is that those notes are at the very start of the regions. They are all quantized, so there's no need to make that suggestion to me. They should not be "hanging over".

One possible workaround is to manually stretch the heads of all regions to the left of the first note. That may prevent the deletions. But that can be time consuming & messy work, especially if regions need to be head on for attaching. Also one must remember to do this procedurally each and every time a region recording is initiated.

This seems to definitely be a bug with the software - you record MIDI, quantize, go work on something else in the file, come back and poof - 1st note in that region is GONE. Very frustrating. Any answers yet?