Numbers unwanted actions. I use Numbers on my iPhone 15. Recently some bubbles appear on my sheet, how can I remove them, what are they for how do they get on the sheet in the first place?

Thanks for your response. I don’t seem to be able to click on or move the shapes at all. Someone has commented they may be a bug in the App. Now when I go back to the sheet they are not showing anymore! I’ve had it happen a number of times. Also sometimes when I scroll down or up the sheet it just keeps zooming down or up the lines with no controlling it. Seems like a bug too.

Thanks for your suggestions. As the shapes have now disappeared I will try your advice if it happens again, but I’m quite wary of reinstalling as I have a lot of tax record sheets that I wouldn’t want to lose. I’m pretty sure they are saved on the Cloud but will definitely check that.