All Bedrock breaks with signs

In creative I was placing some signs near bedrock and all a sudden I broke the block with the sign next to it with on on top of that one. This bug is very game breaking and needs to be fixed Breaking Bedrock on Bedrock Edition - Ereo's Minecraft Let's Play Episode #8 - YouTube

The point were it happened is at 2:00 for exact recreation of this glitch on my let's play