I just noticed that when navigating a Table DAT with keyboard arrows to jump around cells in various rows/columns, the navigation will suddenly start skipping or becoming unresponsive, and then when I try to use the the TD UI to, for example, save, it becomes unable to do so.
^ notice in this gif how the menu items have no rollover states
To reproduce:
Open the attached .toe (this is a fresh file, I just typed the values into it)
Click into the table and use arrow keys to jump between cells