hi guys. just trying out dorico with the trial version, but i stumbled on this bug as well, MULTIPLE times. the first time i undid stuff outside of the screen, so i thought it didnt work until i zoomed out, and saw half my score gone! And i couldn’t redo then either, even thought i hadn’t made anything else afterwards. Here is a video of the issue. The undo history seem stuck at an much earlier bar.
Running imac 27" 5k retina 2014 and Mojave 10.14.6
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