Thanks for the report, still checking and will make the update specifically for this situation.
Yes, some external hard disk enclosures with 4-5 drives also work slightly similar: technically they may report if all drives would form a single array - and this is why all drives displayed with the same letter. Their health, status, temperature etc.. all reported just they may show the same drive letter - and the other drive letters associated with the following disk drives (like if they'd be different USB drives).
All hard disks detected and reported properly: all disks appear and the check mark on the first logical drive of the enclosure confirms that ALL drives are in good health.
But I can understand that this is annoying, so will make the required changes specifically for this enclosure too