I logged on today after being off for a few days and found that I am unable to break any shop signs (either by hand or with an axe) on any of my residences (smp4). This includes previously placed ones and new ones that I placed today to test it. Regular non-shop signs are functioning normally. Asking a few people in chat indicates that other are having a similar issue or at least have had it recently. Logging out of the server and closing MC completely did not resolve the issue. If I break the chest/block that the sign is attached to the sign will break normally.