Weird line when adding key frame to audio track

Aunque es un problema conocido como dicen por aqui muchos quizas debas solo presionar click derecho sobre el keyframe y convertirlo a lineal.

 Eso deberia ser la solución.

Salu2

If you right click, (on a mac = Control+your mouse click) - you can change the audio back to 'Linear', rather than 'Auto Bezier' or 'Bezier' which is the 'blue' version of audio fading in and out etc. Isn't a bug, it's a feature. Hope this helps. I think you're used to editing as 'Liner' = straight lines, 'Bezier' = 'curved blue lines' / keyframes - hope this helps!

This looks like an auto bezier
Usually this is created when pressing command+option or ctrl+al and clicking to create a keyframe.

Known issue/bug:

workaround: Save, Close and reopen project.

See:

https://community.adobe.com/t5/premiere-pro/using-pen-tool-to-adjust-audio-track-volume-in-premiere-is-creating-a-curve-automatically/m-p/11620331?page=1#M312837

I have no problems with the db level being displayed. If you have the curved keyframe line problem closing and restarting the program will fix it. It seems once a clip has been 'fixed' it will stay fixed even when adding or adjusting keyframes but any new clips might well have the curved line problem. I have found that there is no problems with track volume keyframes, only clip keyframes.

Also: I can't see the DB in the audio track file when I move the keyframe up or down, normally it would indicate what the DB is currently set to, if you look at the screenshot the keyframe is highlighted in blue but isn't displaying the DB. Instead  have to look at the effects control panel to see what it's set too. This is slowing my workflow down nicely. 

I and I think others have noticed this and I believe it is a known fault in the latest version of Premiere Pro