I spent 2 hours on the phone with Lacerte with this issue with eSig.  Yes, it also broke for me in the last update.

It's an issue with high DPI settings.  There's a "ticket in".   No estimate on resolution.  

There is a fix/workaround involving RegEdit.  Much too complex for me to post here.

  In the meantime, I found that if you change your high DPI compatibility settings (right click on your Lacerate icon, Properties, click on the Compatibility tab, then the high DPI settings box) to "Application", you will get a weird screen scaling, but it's usable.