Solid blocks are behaving like transparent block and I'm able to walk into them and suffocate. Only blocks at head level do this. The bug seems to occur when I'm using scaffolding although I'm not certain if that is what's causing it. Once it happens once it will continue to happen until I reload my world.
Related issues
Comments

Thank you for your report!
We're tracking this issue in MCPE-109925, so this ticket is being resolved and linked as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
If you haven't already, you might like to make use of the search feature to see if the issue has already been mentioned.
Quick Links:
📓 Bug Tracker Guidelines – 💬 Community Support – 📧 Mojang Support
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki