The Keyboard persist on Telegram for Android

[Barabba11]

Hi! I'm runnng this example:
https://github.com/windkh/node-red-contrib-telegrambot/blob/master/examples/keyboard.json
With Telegram for windows works ok, type the command>see keyboard>make choice>the keyboard disappears.
While the same on Android: type the command>see keyboard>make choice>the command is worwarded sucessfully but the keyboard keeps on chat, I need to reduce it manually.

If I have opened both interfaces:
When on PC I call command the keboard disappears on both, I select answer on PC the keboard disappears on PC but still on phone, when I chose with phone (cmmand exacuted) the keyboard stills on both.
What can I do to eliminate the keyboard? Thanks

[Barabba11]

Another 2 quesions please:

1. why if (msg.payload.content === "off") works if the message otputed from command node and doesn't work with receive node? That makes me crazy...
   the only difference I see is that the message from second utput /command is generated and sent by NR, while receive node outputting what comes from internet. Neither if I send that exact text (I chech on debug and it's correct) from phone, neither from telegram desktop. I've tried to clean eventually /n etc but no success,. Mistery.

2. consider I don't filter what I receive and I reply to all messages received ("Warning, you can us only /commandexample text"), I flag the "commands (from configured command nodes)" so I suppose when I type /commandexample I don't receive also the warning message, since it match the filter, but I still receive. What I'm doing wrong?
   Thanks

[Barabba11]

when the keyboard stays (after reply), it doesn't produce effect after pressure, it's an empty keyboard which appears always. Something is missing to send to telegram to close the keyboard and don't show more. Which is the command to send to close the keyboard, I would send it once more, thanks