Hi cad.supportEC55Z,
Sorry to hear you are hitting this problem. As you can see from the thread we've had this issue come up before - unfortunately we are still unable to reproduce this in house.
What OS are you on, Mac or Win? What version? Do you have any regional settings changed, different language, decimal separator (comma instead of dot)? Is the Scale drop-down the only control you have this problem with or are there others (say for example the Text Height drop-down while creating/editing text)?
To change the scale are you clicking in the control, selecting/deleting everything then re-typing or are you using clicking at the end of the initial value and using backspace to just delete some characters? Are you using the number keys on the keyboard or the number pad to enter the values?
Any additional information is appreciated. This isn't a global problem - there's some specific setting, configuration or workflow causing this, which we need to track down to fix the problem.
Thanks,
Chris