I've seen other posts in the forum about the shift key no longer working to constrain proportions in Indesign.
I'm having this problem, and I have also tried following the steps to reset Indesign's preferences (Shift+Option+Command+Control while opening Indesign) as is suggested as a fix, but the option to delete preference files is nowhere to be seen.
I don't have Webroot installed on my computer. I'm on macOS, running Mojave 10.14.5, and my version of Indesign is up to date.
Any help would be much appreciated as it's taking me ages to get work done without being able to constrain proportions with the shift key!
I have been having this problem on and off for a year. I cannot believe after using the shift key for the last 30 years (!) to constrain proportions, draw a perfect circle or square, or draw a straight line, that Adobe has A.) managed to mess this up, and B.) not fixed a bug that everyone can see has been a problem since 2014 or earlier. I guess this is why we pay our monthly subscription fee, year in, year out, for these pleasures. I have not foudn a decent fix and would like a response from Adobe here and now to address this problem.