P: Remove the 8192px limit on Save for Web [2013]

Hopefully adobe will get it worked out since i hear save for web will be gone in the next photoshop version.

Also last I checked Export As still doesn't let you save slices.

Export As has rounding problems. So you'll give it a dimension to export, but it'll add one pixel in one direction. Or you'll get a row of transparent pixels. And it also doesn't work at certain sizes without turning off graphics acceleration. 
The list is Longer than that, but those are the few that I remember off the top of my head. 
It seems a Lot like they started to replace it, but then decided to keep the old one in still as well because the new one is pretty much garbage. But someone probably pushed for it to be consistent with the asset exporter in illustrator. It's somewhat similar. 
Maybe that same person should be in charge of transforming in photoshop, and how sometimes you hold shift to keep proportions, and sometimes you hold it to break keep proportions.  Adobe is All over the place these days. Need a UX manager? Wait, that's not a question. You Need a new UX manager. 

Use File>Export As the replacement for Save for Web.

I don't understand why my photos are limited to 8192x. Still.

My D810's photos come out of the camera at 7360x4912.

The new Sony A7RII is 7952x5304 straight out of the camera.

Have you looked at what the new Canon is?

8600x5900.

This means your software is already behind the curve and it's only going to get worse.

Let's not even talk about the fact that Lightroom now allows us to combine our full size DNGs into panoramas, thereby creating significantly larger files.

Why then am I being limited within Photoshop?

That's Amazing of you Jordan, really helped!

You sir are a legend! 

It's 2018, update Photoshop every time there is an update notification, and still a bug! However thanks a lot for your trick guys, I couldn't ever finish my easy task of just exporting slices without this thread! I tried exporting random things with Save For Web/JPEG, then closed the window & reopened it to export my target slices. It worked (if the whole canvas exceeded limit, maybe you can temporarily trim it down to be at the limit size, just to get back the 100% size, then recover it once it works!)

Uhh, just so it doesn't look like I'm crazy, someone had commented

Because save for web is 20 years old and being replaced by File>Export>Export As

but now seems to have deleted their post.

Fair enough, but unless I'm mistaken there is no way to export slices using Export As?