Unable to reset cache size

I had set the cache size for manual size 100, not the rolling cache but the one you choose area from the map tool.

Now I can’t adjust, no matter what number I write it reverts to 100.

Any seen this?

Thanks for your help.

When you change the size number, did you hit the Blue “Modify Cache” button immediately below that field?

Same issue here. I set the manual cache size too high, and it won’t let me reduce it or delete it. It seems like it can only be increased.

Any help appreciated!