Yes (especially post-2015). While I haven't had unabashed statewide voter file access in some time, I feel fairly confident in simplistically approximating the "other" category as displayed here as 30% Latino, 25% black, 25% white and 20% Asian (not including other racial rounding errors). Also, it has seemed that over time, at least some of these improper individual racial classifications get corrected via other state data-sets, though I am not 100% sure about that. However, I'm not really looking to take an otherwise series of "official" data-sets and inject my own approximations into the mix.
However, if you want to do such in determining true black vote share from 2012 onward, then:
2012: 32.2%
2014: 30.7%
2016: 30.6%
2018: 31.9%
So based on these corrections, real black voter share in 2012 was still a tad larger than in 2018, and 2014's was identical to 2016's. This means that even prior to 2016, the "other" category still included a meaningful amount of both black and white voters, but circa 2015 is when SoS race classifications went off the deep end and large segments of all newly-registered voters began being classified as "unknown/other" by SoS).
I understand. Indeed it felt a bit strange to me that the official Black share of the vote never crossed 30% in those years. Thank you!
About the bolded part: any hope this gets solved in the near future?