Same on Nintendo Switch using City Texture pack. I hard reset Minecraft and it still glitched when I loaded back up. When I removed the texture pack, the problem corrected.
I found these videos to be helpful. https://youtu.be/a6YgUQU4Iqg https://youtu.be/BBU2R4qSKYk.
Happened on City Texture pack when I was placing a sign while submerged in water. Same fix worked again.