A new hotfix is available.
Use the game-updater to get it.
It's located in your Don't Starve installation folder: ...\Don't Starve\updater\16\updater.exe

May 23 Hotfix (78281):

Fixed opengl crash when going into caves in windowed mode
Mixed missing phonograph
Fixed wall health not serializing properly
fixed burnable pickable save and quit exploit
fixed rare crash with mines
Smallbirds will still be your friend if you save and reload.
Remove buildable cave turfs (they were a debug thing that got checked in by accident)