Apologies for the delayed response. Based on your description, it seems that you didn’t encounter such issues with your RUT240 on older firmware versions before RUT_2_R_00.07.06.8. It’s possible that the problem arose with the 7.06.08 firmware.
Due to several issues with the 07.06.08 firmware, we removed it from production. Now, the newest available version is 07.06.10. I recommend upgrading your RUT240 to the RUT2_R_00.07.06.10 firmware version and verifying if the issue persists.