Yesterday’s release of 17.05.10 went out with one bug that has already been resolved.  Temporary grace dates being set on customers that were already delinquent and another combination of settings would not save properly.

The first person to upgrade reported this, and the upgrade files were patched along with that customer before anyone else upgraded within minutes.  If you were waiting to upgrade to 17.05.10 due to this bug report, you can safely update now or wait for the next build.