Spacing cramped before repeat-start
I get the impression that the thick line of a repeat-start bar line is not taken into account in note spacing calculations. See how the final sixteenth under the second ending are closer to the bar line than other similar groupings. In another version of this file (sorry, don't want it to be public) the stem even touches the thick bar line.
Please find attachments at https://musescore.org/en/comment/913773#comment-913773