P: Masking overlays do not always appear (Mac)

I've tried everything to solve this problem. I've restored Lightroom, completely removed the entire Adobe suite with its own total clean-up tool, etc. Nothing works.

In Lightroom Classic, mask viewing does work, but I'm more familiar with the modern Lightroom.

This problem makes Lightroom completely useless to me.

Thanks for starting this post. I have also been experiencing this issue (mask overlay not displaying in Lightroom) for some time. And like others have reported, when I’ve experienced this issue in the past (with prior versions of Lightroom), closing Lightroom and then restarting it has been a temporary workaround to restore mask overlay visibility. However that is no longer working: I am currently running Lightroom version 8.5.1 and Mac OS 15.7.1. It has made Lightroom unusable for me, especially when you go back to fine-tune an existing adjustment mask that you’ve created and are now unable to see what the original mask area looked like while trying to further adjust it. Please fix this problem ASAP. Thanks. 

I'm running Lightroom 8.5.1. y MacOS 26.0.1 and the error continues. Before the last update, I can "resolve" it restarting the app over and over, but now I can't. Restart doesn't work 😞

I am running version 8.5.1 and I'm still having this issue on Sept. 23.  It is very annoying.  I'll edit a photo and everything is good with the overlay toggle until it's not.  The toggle just stops working.  I usually have to close and reopen LR and sometimes that doesn't work

This exact issue has returned in the latest Lightroom update, this is insane.

This still doesn't work for me. No matter what I toggle, I very often have situations where I cannot get a mask overlay to appear. I've read all of the replies in this thread and there is no "try this" step that I have not tried. 

I'm using Lightroom 8.4 on MacOS 15.5, but this issue has been going on for... months? Years? This is simply the first time I've finally been unable to ignore how frustrating it is. 

In the below screengrabs, I have hovered over the mask in the toolbar – you can see that it shows the tool icon over where the mask should be, but not the overlay. 

In the below image, I've increased exposure to 100% to show the mask selection. 

So, again, while you're out here regularly increasing prices, what the heck is going on? 

Thanks @Rikk Flohr: Photography. Issue is fixed and a few more goodies in the update too!

This issue is much much better, but it is still not 100% fixed.

Thanks for fixing the mask overlay in Lightroom 8.4 Update!