i know that it's not a right time for bug reports, but i will write it here anyway) I installed Whatsup yesterday and sent two voice messages to my friend. He said, that the recordings had some issues, i'll check it today, when i see him personally, cause i didn't get it, when he was trying to explain.
Also, just a few moments ago, there was a notification, that there is not enough space on the phone. Long story short, the file temprecord.wav has size of 1.06 Gb now. For some reason, the process /usr/bin/arecord is still running though i've closed whatsup earlier with Quit option.