It was one person, and it's apparently fake.
It's just weird. Dorothy doing a double take, and scarecrow falling twice as they skipped along.
I'm gonna be spending my days in a charity shop now looking for an original vhs ffs.

Urban Legend.
Schrodinger's cat walks into a bar and doesn't.

If I remember correctly, one of the storks way in the background was thought to be someone hanging.

I generally have always agreed with you 1986.. I was just wondering If it may have been in cuts that were never used for this very reason.. or as I thought not true at all. Ty guys for your time in reply

It's almost impossible to believe now, but the sets of The Wizard of Oz were really closed off. MGM didn't want anyone seeing what the movie would look like until they were ready in their own promotional campaign. Sure, there wasn't pocket cameras and the internet at that time, but still, they didn't want people describing it, either.
And also, all the sets were sets. Any trees you saw were fake. Everything was constructed to be used on camera until filming was done, then it would be either scrapped or recycled for future productions.
And before they filmed, they would check the set, do test photography with the Technicolor camera to make sure everything would look good, and then the director and other technicians would be monitoring what was going on during filming.
So how on earth would anyone break into a closed, highly-guarded set under constant watch to hang themselves off of scenery that likely wouldn't hold their weight during filming and kill themselves and no one happened to notice? Much less how they wouldn't move the body and film again.
MGM actually shut down production when they decided the first director's work wasn't what they wanted, so it's not as if re-filming was too expensive.
Basically, no, despite what people claim to see or doctor onto a VHS and then put on the internet, there are no people hanging themselves in the movie.
What we see and what we seem are but a dream. A dream within a dream.

Before the film was released on DVD someone had tampered some VHS footage of the film and edited in a moving image of a munchkin supposedly hanging itself. This has been debunked many times.

Welcome to several decades ago.
The "hanging people" exist only in the minds of some (probably intentionally) deluded people. And a few meticulously edited online videos.