This is fixed for the next version 24.10
On the other hand, the export also fails with h264_nvenc and hevc_nvenc encoder.
If this is with width 609 that is understandable as many encoders and pixel formats that do not support odd resolution values. There is code to try to enforce even values that had the bug you mentioned. I do not know if your failure was with width 609 (expected) or 608. If the latter, the log says
[h264_nvenc @ 000002720f4f5440] Interlaced encoding is not supported. Supported level: 0
Check your Export > Video settings; this should be unrelated to Reframe. If you are using Automatic Video Mode and load an interlaced clip, the Video Mode and export are set to interlaced. I think some hardware encoders either support that or do not throw an error.