We are playing cross-platform, host system is PS4 Minecraft, joining system is an Android tablet, both with latest updates from auto download or Google Play respectively. Since the latest update, if either person using a tablet joins the PS4 world, the PS4 will no longer auto-save OR save regularly through the "Save and Quit" function. The world becomes stuck on "World Saving...." forcing one to eventually close the game manually. Any and all changes to the world, from the time the world was loaded to begin with, are not saved and are reverted once the world is reloaded.

Tested by playing both with and without Android players joining. With Android causes game loss through reversion, without (or just playing PS4 only) has no issues.