The back button on android works a bit funky in the mobile app.
Try this:
- Open the side nav, then less back. (Should just close the side nav, instead it takes back a page)
- Open an entity, press the three dot menu, then press back. (Should just close the menu and go back to entity, instead it closes the entity)
- Press on a date field, select a date, press the back button. (Should close the pop-up, instead closes the entity)
Any time a web-based menu is a full screen overlay, the back button should close the menu instead of go back to the previous screen.