9 frames is common in the honey supers above a queen excluder.
10 frames in the brood chamber(s), always.
You will need to look at what you have and figure out the optimum way to fix it.
Do not leave it. It will only get worse. Fix it. Yes it is going to be disruptive. Suit up, Grit your teeth, puff up your chest, grab a good sharp hive tool and get on with it.
Get a completely empty box that has no spacers in it. Go buy one if you need to. Bring an empty bucket and bread knife too for scraping wax and honey into. Remove all the hive boxes, bees and all, right down to the bottom board. Set the boxes on plywood or upturned lid on the ground beside the hive. Put the new box on the bottom board. Get on with transferring frames one at a time into the new box. Take a frame out of the old box. Shake the bees off of it into the bottom of the new box. Clean up burr comb and bridge comb and cut down fat sections. Place the frame into the box. Press frames tight together as you go, no extra space between frame shoulders. The frames are design for exact bee space. Also do not change the order or orientation of the frames as you transfer. So as to keep the brood nest in same organization as the bees have/want/put it. Make that 10th frame a full heavy honey frame. When the new box is full, one of your other boxes will be empty. Tear out the frame spacers. Scrape clean the box. Put it on top on the hive, and start transferring frames into it. Continue, repeat, continue until you are out of frames.
There may be a lot of bees flying, crawling, and running around. You may feel like your are making a royal mess. You are, just cleaning up what shouldnt be so stay focused and get her done. When all done, close up, clean up, and leave them alone undisturbed for 1 week. You will be amazed at how tidy they will have made things in there.
Hope that helps!