Launch the tool from the empty template.
From the File tab for instance, click on a color chip.
The color chooser appears.
The R value is 255.
Set the R value from the text field to 0.
Set the R value from the text field to 100 : only "00" is displayed.
Undo : the R value is back to 255, when it should be back first to 100.
Seems a transaction is missing.

Same thing with the slider, if one *move* first the slider to ~100, the move to 0.
Undo reset the value to 0, instead of ~100.