Dialog "Save as" no selector with Edge?

Hi Moenk, I ran into the same issue and I found a fix. When you use the ‘Indicate on screen’ to create a selector automatically, press F4 before click on the Save button. This will switch the UI Framework from Default to AA. Do not ask me what AA is but all I know is after changing this, you are able to select all the buttons you were not able to before. I understand my reply comes very late but maybe this will help someone else. Cheers.