Invisible, undestructable wooden blocks

[Jaldabaot]

When a monster destroy any of my wooden blocks, they dissapear, yet former block place cannot be crossed or build upon (before i reloaded the game, you could actually still see wooden block, couldnt sell it tho). After reload block location is empty, still cant cross it or build anything there. Problem is, that it completly separeted me from mission objective. Anyone had similar issues?

[Epilogue1212]

I have the same problem. I try not to use wooden blocks that are accessable to enemies because I had to totally reroute my settlement once.