I’m sure you’ve checked. But there is a maximum file size! So it goes onto the next file. It could also have put it in a new folder if the file name was 999?
Happens on the tablet I use for work, and both of my samsung phones. Also the touch screens on the machines I work on. Sometimes they load wet material onto the machine, a water bead fals onto the screen and rolls down it, the mouse tracks it and selects everything it touches on its way past.
I never knew this , I thought only our screens work via the finger / fingers didn’t think rain would do that , like those gloves you buy for the winter with the power logo on the finger is the only finger tip of the glove that will work on your phone if you know what I mean , saying that at some point I think we’ve all answered our phone or rang some one by accident with our phone in our pocket , hmm got me in a lot of trouble that !