[LH2286] Beta 12: Lists behaving strangely

Lots of odd behavior, some of which I am unable to reproduce reliably. One that is reliable: Setting multi-level list formatting of 1, 1a, 1b, creates the following, with periods taking the place of the number at the left without being replaced by a, b, the indent showing up OK, and the numbering resuming appropriately after the indented items:

Other strangeness includes unreliable application of list formatting when clicking the list icon or choosing from the dropdown options.

The incorrect tabbing issue has been filed, as has the fact that currently neither of the numeric sub-options (1a,1b and 1.1, 1.2) are functional. Thanks!