My browser / operating system: Windows NT 10.0, Chrome 88.0.4324.150, No Flash version detected

Apparently, if you keep cloning something, then switch out of that tab, then do some random stuff on the other tab for 5 seconds, come back to the project tab, then a mass of clones will be stuck together, because the program is still running, but the movement is paused or something.

Hmm. Apparently the clones create wherever the sprite is. make sure the clones aren't where the sprite is, by doing stuff like:

when I start as a clone
go to [random position]

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when green flag clicked
forever
if <kumquat is visible> then
destroy all kumquats 
end
highlight here and press shift+down