Change Separators combo to be 1.000,0
New a sheet and fill x with row number and y with very small numbers so that scientific notation is displayed.
Plot line graph and Y-axis should also have scientific notation.
Go to Y-axis dialog and for “Divide by Factor”, enter the highest tick label
Click OK and save Project and close Project.
-->Tick labels change correctly.
Change Separator back to 1,000.0 and reopen Project file
==>The Divide by Factor is ignored, tick labels are not correct, comma is not converted to period.
Fixed in Origin2024b.