Since there is no active development on RXTools, then there lacks active support/bugfixes. So any bugs reported will basically fall upon deaf ears.
There's really no reason to continue using RXTools when there's just far better options out there with actual active support.
Not to mention switching to another CFW will not effect your NAND, games, saves, account, ect. So switching is a painless process.
https://gbatemp.net/threads/tutorial-updating-from-rxtools-to-luma3ds.427735/