Not a bug..
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Edit: So.. I kinda replicated and found the "culprit". I'm using a custom script called TJF Smart Fade to create fades easily with mouse + hotkey. And it happens when I use the script to create a fade, and then delete the next item in the same track. So, if anyone struggle with this kind of issue. There it is..
Hi, I'm getting this strange behavior when deleting items.
Some fades and crossfades are removed, when deleted items are in the same track.
I also noticed this won't happen if I disable "Auto-crossfade when editing", but this shouldn't happen, I think.