Operating system: Windows-10-10.0.17134 64 Bits
Graphics card: AMD Radeon R7 450 ATI Technologies Inc. 4.5.13507 Core Profile Context 23.20.15032.11
2019-04-23 12:31 Hash 5a144c797a3b Blender 2.80 Beta buildbot
Turning off Lock Object Modes so that I can sculpt in dyntopo on 3 separate mesh objects, and selecting each and switching to Sculpt mode I found that the object doesn't hold the updated sculpt info for view once you select the next one, it returns to the previous state until you select it again. I also found that saving the file will cause it then to show that last sculpted position and tesselation count, but once sculpted it will also switch again once deselected until save again.
Steps: duplicate the default cube, once or twice and then turn off Lock Object Modes, select each in turn and swap to sculpt mode and set to dyntopo. Select the first, sculpt, select the second and watch the first snap back to the starting shape. Sculpt the second, select the first and then watch the second revert temporarily while deselected. Save the file after some sculpting and then see the saved shape will be where they revert to. Attaching a simple example.
I used this method of sculpting on several objects in 2.79b a lot, makes it easier to work with complicated subjects. Thanks for looking!