Short version:
New production 3.1.5.569 didn’t fix it for me.
Long version:
- Installed new 3.1.5.569 as an update over 3.0.0.519.
- Checked Person filter availability in Events: none available.
- Rebooted phone, checked again: none available.
- Uninstalled new 3.1.5.569
- Rebooted phone, reinstalled 3.1.5.569
- Checked Person filter availability in Events, none available.
- 3.1.5.569 not
- 3.1.0 (564) not
- 3.0.5.558 (?)
- 3.0.0.519 works
- 2.50.9.512 (?)
- 2.50.7.487 works *
*
Simple apk sideload (not a bundle)