It should be the same issue as for the official LOS FP3 release. Here’s my workaround to fix it.
Not sure about if it’s only related to MindTheGapps, but it’s a permission problem after the update. Maybe it’s caused of the security fixes inside the LOS update. But as stated above, I posted a workaround for it.
Personally if you want to switch to a new Gapps supplier, you should do a full wipe and a clean install. Otherwise you have old configs and scripts which can cause problems in the future.