I cannot get Teraterm ymodem to work properly.

Using e.g. RC11 on a RP2350A I can transfer programs from the PC to the pico with "ymodem receive" but the Teraterm transfer window hangs until cancelled. The program has been transfered though there is no visible reaction on the Teraterm terminal screen. No "xxx bytes saved" or something. This behaviour is independent of using the Pico virtual com or via an CH340 adapter.

xmodem receive works without any issues ...

Are there any settings in Teraterm that I have to adjust?

Gerald