If the Mode-Change is "hanging" then I am sure, somewhere in your model-tree a cancel is still executing and does not come to an end... And this could also be the reason, why you could not execute the manual function. If the running Cancel is not the reason for your problem with the manual function - please check that your release condition is really true - only bool condition can be parsed and displayed in the HMI - not that the HMI shows something wrong, because of a not boolean condition in the OnManRelease method. And please check the error messages - not that the corresponding Unit/Extension is in error state... (in your screenshot there are 2 errors pending)
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