Post indexer not indexing correctly

I was following this fix here:
https://premium.wpmudev.org/forums/topic/issues-with-post-indexer and it works fine. I have modified the plugin code but I don't like doing that as a long term fix.
Is there any expected time of updating this plugin?

I'm only worried because our companies main website that has 200+ multisites relies on this plugin heavily.

Thanks