Created attachment 171551 [details] Where the preview checkbox is SUMMARY When using a filter through the menubar, there's a "preview" checkbox in the filter dialog at the bottom left corner that you can use compare the filter enabled with it disabled. This checkbox is missing from the same dialog when you edit a filter layer/mask. Because the dialog is modal, there is no way to hide the filter layer/mask in the layers docker while the dialog is open, which means there is no way to quickly compare the current settings of the filter with the filter disabled. STEPS TO REPRODUCE 1. add a new filter layer. OBSERVED RESULT There is no "Preview" checkbox. EXPECTED RESULT There should be one. Or at least a checkbox to "hide" the visibility of the filter layer from this dialog, since "preview" sounds like you're previewing changes done to the filter. Actually maybe there should be two checkboxes: one to preview the changes, and one to switch the visibility? ADDITIONAL INFORMATION An alternative (and probably better) solution would be to make the dialog for editing filters non-modal. That way users would be able to modify two filters at once, and switch their visibility without needing to close the dialog. Naturally this would be more complex to implement.
I can confirm the preview toggle is missing when adding a filter layer vs applying a filter by the "Filter" menu. Reproduce steps: 1. In the Layer docker click on add layer drop down 2. Click "Add Filter layer..." OBSERVED RESULT No preview checkbox.