Layer stack is uninitialized by default. However, when a layer is toggled, the base layer does not get pushed (as a stack base) and later when untoggle attempt is made, top (the toggled) layer is protected as base layer since it is the only one in the stack.
kareltucek
commented
2 years ago
Layer stack is uninitialized by default. However, when a layer is toggled, the base layer does not get pushed (as a stack base) and later when untoggle attempt is made, top (the toggled) layer is protected as base layer since it is the only one in the stack.