Hi, I posted this to the Randomizer block support page, but never got a response, so I'm giving this a try.

I have a couple of sites that are having the same problem, both running 5.3.3.1 and latest randomizer block.

Randomizer block works perfectly fine if it's set to randomize a photo on page load. And when I need to edit the block, I can edit the page, click on the block, and the edit contextual menu pops up fine.

But if the Randomizer is set to animate the photos, it looks fine out of edit mode, but in edit mode I can't edit the block.

When I edit the page with an animated Randomizer block, the block is highlighted in red, but clicking on it does nothing. No contextual editing menu pops up. So I can't make changes to the block. I can't even delete the block.

If I step the version back to the version before the animation was added (just random on page load), I'm able to edit again.

Two separate sites, same problem.