The interface allows edits to layers that have been made invisible. This creates a number of problems for the user:

1. There is almost no situation where a user would want to make an edit and not be able to see what they are doing. Being able to edit invisible layers only facilitates accidents.

2. When an accidental edit is made, there is no visual feedback indicating to the user what they have done. Besides the accidental destructive edit they just made, they will be frustrated that the change they were trying to make (probably to a different layer) has done nothing.

3. Because the destructive edits made are invisible, the user is likely to not realize they have made a change at all and continue working. This will make the undo feature entirely useless when they finally show the layer again and realize their mistake. Undo also includes the visibility toggle, so even if they could undo back to their mistake, they wouldn't be able to see it when it reverts.


Suggestions:

1. Option to automatically lock invisible layers, on by default. This means to override the existing lock feature, not just toggle it on (shouldn't have to manually unlock them later when it's set visible again). This would prevent accidental destructive edits, and being an option would allow the advanced user to make invisible edits if they wished.

2. Option to make toggling the visibility of a layer also set it active. Currently it requires two clicks, one to the visibility box, and one to set the active layer. This is very error prone. A one-click visible+active would save time for users that primarily want to do both at once, and reduce errors that result from forgetting to click both.