echo bot tx characters lost

I have compiled the sample code from ncs/v2.9.1/zephyr/samples/drivers/uart/echo_bot and loaded it onto an nRF54L15 dev kit.

The dev kit is connected to my pc running a ubuntu 22.04 vm and picocom terminal emulator (configured with 115200 baud, 8 bits data, no parity and no flow control)

When I run the code on the dev kit I only see the following messages received on the picocom terminal:

Hello! I'm your echo bot.
Tell me something

However, looking at the code, I would expect to see this:

Hello! I'm your echo bot.
Tell me something and press enter:

It is missing "and press enter:\r\n".

When I enter a few characters of text on the picocom terminal and press enter then I observe the expected response.

Can you suggest how to stop the characters transmitted from the nRF54 getting lost ?

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