Traveled away from, then returned to homebase on survival world and found that signs and chests were invisible. Wireframe highlighting is still visible on either when targeting a specific sign/chest. Chests can still be opened and items are still inside, so this is not a duplicate of MC-138938, and text on signs is still visible, either rendered on the item behind the sign or floating in the air.

Exiting and restarting Minecraft corrected the issue, so I was unable to get a screenshot (first screenshots did not work correctly, produced grey screen with small text in upper left corner reading "Minecraft 1.14".) Have not tried to replicate issue yet.