And that's why you use the drawbar to do the pulling and not the 3 pt hitch...
^ This.
I suspect most people run into this trouble when the connection point on the object being pulled is higher than the drawbar, causing the rear of the tractor to lift and reduce traction. We run into this when skidding large logs out of the forrest, I've already posted decades worth of photos such as, my cutting partner pulling trees that I've felled out of the forrest with his old Ford 3000.
When having to do so, I'm always infinitely more comfortable on an HST vs. a gear driven tractor. Whereas a gear-driven tractor will walk itself right over if you can't get to the clutch quickly enough, at least an HST will halt its wheelie climb and likely sit itself back down, as soon as your feet come off the pedals.
Oh, and here's my cutting partner, with one of the hundreds of logs I felled and cut at his property, prior to his passing. It always made me nervous seeing him do this with that old manual transmission Ford, but he'd been doing that for maybe 60 years at this point, so it really wasn't the place of this then-young guy to be telling him any differently.
Before anyone asks, he died from a hereditary disease, not a tractor rollover.