I am having the same issue - my best guess has been it is somehow related to the page width when I am editing. Have tried adjusting page width max and site margins, but that doesn't seem to impact it. I have my content broken into very small sections now, which is helping constrain the ripple effect of the text boxes changing sizes constantly, but still a perplexing problem.
Would love to hear if anyone has figured this one out!
RMSB got a reaction from LucasGordon in Text blocks are changing size repeatedly
