Thank you for your log files. I have checked them.
Please
- install Boldbeast Recorder V7.2, enable the "Tune Special" option, try to use Record Mode 4, 2, 1, 5 to record.
- if it doesn't work, please install this new test version
View attachment 3092504, enable the "Tune Special" option, try to use Record Mode 4, 2, 1, 5 to record.
- if it still doesn't work, I believe no recorder work well without root. In this case please root your HTC One M8 Android 5.0, enable the "Change Audio Controls" option in Boldbeast Recorder to fix the problem.