Issue is still present. It happened to me on Saturday. It’s completely random. Usually after landing. Sometimes before takeoff. Issue continues.
Yep, you are right. It happened to me again yesterday. Luckily, this time at least it offered the needed options in the ATC menu
Thank you for the bug report.
We have created an internal ticket to see if our team already has this logged, and if not they will attempt to reproduce the issue and create a new bug report. This item is now marked as feedback-logged. If there is an existing bug report or one is created, we will move this thread to bug-logged.
This sorts it for me when I get the issue. Just open up ATC and select it in there.
Ive had this multiple times as well…
today, I twice flew into Southampton Intl / UK.
both times I landed, I got told to switch to ground, I Ack’d and did so.
but then request taxi did not work.
I also opened command panel, and tried there, and it didn’t work there either.
so whilst, its true, sometimes the comms panel will work, where the ‘enter’ key doesn’t, at other times, it just appears like ATC is MIA.
btw: I double checked the frequency given, and it was correctly dialled into the comms panel. even re-entered, still nothing.
…
but there are quite a few ATC bugs, on takeoff in the same flight, I was told to enter runway - but then couldn’t get clearance for takeoff (so got dinged on that too 
)
Do you have the same issue if you follow the OP’s steps to reproduce it?
Yes.
Provide extra information to complete the original description of the issue:
Initially it works to taxi to runway and hold short, after that it’s totally random but always happens in every career mission, tapping the return key to comply with instruction from ATC quits working.
If relevant, provide additional screenshots/video:
none