Same issue for me, Win10 v1.14.30 no resource or behavior packs installed, 100% vanilla survival world, not on Realms. The turtles mate and pregnant turtle will either just sit there or roam/swim around never laying eggs. I tried copying my world and using creative to spawn eggs/turtles on the exact spot and it still does not work.
Could_b_ne1
Same issue for me, Win10 v1.14.30 no resource or behavior packs installed, 100% vanilla survival world, not on Realms. The turtles mate and pregnant turtle will either just sit there or roam/swim around never laying eggs. I tried copying my world and using creative to spawn eggs/turtles on the exact spot and it still does not work.