drmajorbob

I seem to have fixed the problem on my own. I edited the original post to explain it.

How? I searched a while and haven't found any way to do that.

Thank you, that does a reset of some kind (pretty limited according to the screen), but it didn't fix the problem at all. I'll try to remove the app entirely, which may be difficult, and install it again.

That doesn't do anything, but @markw gave me the scoop that works! But it had no effect on the issue I'm seeing.

CTRL gives me the context menu.

What factory reset are we talking about?

I haven't changed any preferences in the two days I've used Photo on this Mac. All I did was adding a Curves preset and a Crop aspect ratio.

No, that works just fine — but it's slow.

It is possible to move the marquee left and right at least (4-way) — if I somehow avoid moving diagonally — but it's impossible to move up/down. Dragging edges (2-way) on the other hand, is clear-cut: left and right work perfectly, but up/down doesn't work at all. I'll do that, and then I'll try tech support. I sincerely hope it's not due to a corrupted OS

It shows the 4-way cursor moving, trying to move the crop but failing to do so. Attempts at that point were up/down or diagonal, I suppose, and it's hard or impossible, maybe, to drag precisely left/right with no up/down component. Later I did other tests and found I could move left and right, and couldn't move up or down by any method (other than 2-way drags that change the dimensions and aspect ratio).

It does fail with multiple files, and I doubt restoring defaults will help, since I only installed the program on this machine two days ago. I'm aware all this should work, since it did work on my M1 mini a couple months ago. M4 mini, Sequoia 15.3.2

I'm talking about moving the crop box via the 4-way arrow, without changing it in any other way. Moving left and right works either way — 4-way or 2-way — but moving up or down doesn't work either way. Diagonal moves also fail (4-way). The pen tool seems to work normally, but I'm not terribly adept with it, so I can't easily put it through all its paces.

Yes, exactly the way I did it on my previous Mac Mini, and it still works for moving the marquee left or right, but not up or down. Moving left or right isn't smooth or predictable, though. It jumps a third of the screen at a time, or something like that, as if there's a "snap to grid" issue going on.

I hope so. Is this in the Bugs category on the forum now? I'll go back and describe the up-down situation in the original post if I can.

Yes. Now that I've recorded a video, I see it's a more complicated problem than I had thought — and it's DEFINITELY a bug. Dragging files on my desktop works just fine, so it's not a simple "trackpad doesn't work" situation. Affinity Photo moving crop bug.mp4