Adding my name to the list of editorial professionals losing their minds over this--this glitch is ruining my working life. I was convinced I had accidentally programmed a keystroke to take me to the end of a document and couldn't figure out which combination of keys was causing the jump, so I was so relieved to find this thread! But that relief was short-lived after I read all the comments and realized there's no fix. UGHHHHHHHHHHHH.
I'm using Word for Mac 2019, v. 16.51, working in Print Layout view with All Markup visible but deletions set to "Hidden" in Preferences. My experience has been that this doesn't happen in Draft view, but since editing with Track Changes on in Draft view is excruciating, that cannot be the recommended solution. <weeps>