I’m seeing unpredictable weirdness with components in the latest beta. 1.3.26 (533) Clicking on components doesn’t always change the info box to tell me what the component is. Cmd-Ctrl-M to update metrics sometimes results in the components moving down to the origin point, and overlapping each other. I discovered much of this with quotation marks, so perhaps it has to do with rotated components (a single open quote as a turned comma) and/or doubled components (double quotes made from singles).
Can you send me the .glyphs file?
Found the problem. Thanks for reporting.