The problem here is that the buttons for 'Save' and 'Cancel' in the 'Save As' pop-up window do not function. The window otherwise works as intended (but is still useless!). I also discovered that moving the window will blank out these buttons, or blur them (was going to include screenshot, but apparently that is more complicated than I care to bother).
Toad Data Point 4.2.1.303 (32 bit) running on Windows 10 Enterprise (64 bit) version 1703 build 15063.674.
One of my employees noted this issue for the past couple of weeks on versions 4.0 and 4.1, and I could not replicate on 4.2. The problem first occurred for me on Friday (11/3), and is consistent in its behavior (e.g., does not work) now. Work around is to copy query file and change the name prior to opening, but I have not found a method to save changes made to an open file using 'Save As' to avoid overwriting the original query.
Anyone else experiencing a similar issue?