Issue with Signal

I am having an issue with Signal 7.9.6 on a Terrecube 2e running e/OS 2.0-s-20240506399550-stable-emerald.
Normally when a call comes in an icon apears to answer or decline call. Since update to Signal 7.9.6 the only way to answer a call is to unlock the phone manually start signal and then accept the call.
This does not happen with a Fairphone 3 running e/os and the same version of Signal.
Has anyone had this happen??

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