If you install recording software, you're liable for what it records. Bug or not bug, the liablity is yours. The only way you would get Otter.ai in a courtroom would be a civil case and then the not being a paying customer therefore no expectations of a warranty applies.
Seriously, this thread is "I installed recording software and it worked on things I didn't think it would. This company is terrible." while most of us work in tech and know that bugs exist and have generally written some bugs. Worse case, it's a bug. The solution is to stop using it and move on. Or pay for support and have them fix it.