I'm trying to inset another face near the center of this plate. After pressing I key the inset information appears on top of the screen but there is no dotted circle showing the preview before confirming and no additional vertices are created after confirming.
I have tried to reset scale using Ctrl+ A in Edit mode and Object mode as other answers suggests but it didn't work. Also closing blender doesn't seem to solve the problem.
I have 3rd mouse button emulation enabled.