[WT-support] Problem with CAT of the Yaesu FTX-1 (works partially)

[IZ4MJP Franco]

Today I was configuring a Yaesu FTX-1 Optima purchased from a club I'm a member of. 
The CAT works correctly with DXLab, QARTest, WSJTX, MSHV, MixW, etc., but with WinTest partially works.

To get it to "work partially" I had to select an FT-991 from the drop-down menu, as neither the FTX-1 nor the 710 were present.
Once connected, the CAT allows me to change bands using the - key combination, but the frequency indicator does NOT follow the radio's VFO. 

In the Band Map of Radio 1, I can click on a spot, the radio tunes to the correct frequency, and the display also indicates it correctly. 

If I move the VFO, however, nothing happens.
The installed version is 4.57 (but I also tried 4.58 dev).

Among other tests, I changed both the RS-232 port speed and the radio model (FT-5000, FT 891, etc.), but the result was the same.

Has anyone else encountered the same problem?

I'm also wondering if the LUA script "YaesuScripts.zip" developed by N6TV can be installed to manage the FTX-1's internal DVK or CW transmission.

Thanks for any suggestions.

73, IZ4MJP Franco