Sorry, my bad! Thank you for the correction!
First of all, I should have clarified a bit. It’s not specific to any one brush. Sometimes it happens randomly. It goes away when I close the program and reopen it—it’s nothing serious, but it’s a bit annoying.
It’s been happening specifically with Radiel’s “Cherry Blossom Brushes,” and I don’t understand why.
And my OS is Microsoft Windows 