When i tried to edit the Layer Mask parameters like 9Shift edge,smooth,contrast),it accidently exit and can't do change these parameters value.It's only after the latest update.Kindly do any correction immediately.
@luke_6911 try manually resetting your Photoshop preferences
https://helpx.adobe.com/ie/photoshop/using/preferences.html#Manually
Remember to back up your settings before doing the preference reset
https://helpx.adobe.com/ie/photoshop/using/preset-migration.html
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