I am currently using the latest Windows version of SeeMusic (3.9).
When typing the bar lines opacity value that is greater than "2", the value will be set to "2". For example, when I type "1.5" into the opacity value field and press Enter, the opacity is set to "1.5", but when I type "10" into the opacity value field and press Enter, the opacity is set to "2" instead of "10.
Besides, the bar lines continue to show up even though the song (MIDI track) has ended.
The Bar Lines showing up after the ending will be fixed in Version 6.0.3, available in next 24 - 72 hours.
Thanks for letting me know about the text entry issue - the work around for the moment would be to use the slider instead.
I'm not sure exactly what you mean by the second issue - the bar lines will show up as long as the track is playing. Please upload a screen capture if there's a specific problematic scenario you think needs fixing - thank you!