Alrighty, that took more work than expected, but should be a better interface overall than what it was previously. Rolling out shortly, and I just posted the
release notes from yesterday along with details regarding this hotfix.
tl:dr if you opened a character using Voluntary Flaws since yesterday's (1/11) update, you'll have to choose the "2 Flaws, 1 Boost" option for Voluntary Flaws at the bottom of the Ability Score table and reset those choices in the appropriate columns. Any character that hasn't been opened and was using flaws should have that selection automatically made and the boost and flaws assigned the next time it gets opened.
I'm hoping we got it quick enough the impact should be pretty low, but sorry to those who the changes impacted negatively.