There is a bug in the current implementation of BlurXTerminator’s neural network that very occasionally results in strange box artifacts in certain images.
This will be fixed in a future release, but there is a workaround in the meantime. Click the Edit Source Code button in BlurXTerminator:
This will bring up a window that looks like this:
In the P.ai_file parameter, change “mlpackage” to “mlmodel:”
Then click the green checkbox to save the change. BlurXTerminator should now work normally.