DTMF keys not being recognized

In many calls, for example ba2c1c2d-f92e-4f1f-b983-d33304b92546, a DTMF key function call is made but the phone tree is not successfully navigated. We have tried this phone tree as humans and it works fine.

Expected result:
Press 4, reach next level of IVR / transferred to agent

Actual result:
Press 4, nothing happens, menu repeats
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