I'm Adobe Portfolio user from Taiwan, and I got the same issue with this for a long while too.
I've been keeping searching ways to find out what happened, including changing into another laptop, but it still doesn't work. Then, finally I found this article.
Apparently, it seems that doesn't get fixed. After all, it's a disturbing problem, because it influences on website layout and design. Besides, using Adobe Portfolio conveniently, is the only reason why I bought Adobe Photography Plan. But to my surprise, now I can't good at using it's fonctions as a result of this issue.
Thus, Please help us fix this problem asap, we'll be very grateful for Adobe Team.