Question Davinci problem - Empty space in the timeline, in the negative

[Gojke]

As you can see in the picture, the defined start time in Davinca is 0, I haven't worked in this program for a long time, and the other day I got this problem after an update, it shows me on the timeline for the video time less than 0 in the minus, it's very confusing and unclear, because that way you can't clearly see if your audio fits the video, does anyone know how to remove that time that is less than defined?

 

[Ralston18]

What is the purpose/meaning of that red-underlined icon in the picture?

Appears that something is being disabled....

 

[Gojke]

Which line do you mean exactly?

 

[NedSmelly]

This is normal in the current version, and assists with using the trim tool in editing a timeline clip in Cut mode. It helps you visualise how much of the original track you trimmed out prior to the beginning of the timeline.

that way you can't clearly see if your audio fits the video

Could you please clarify? Are you adding an extra audio track as V2/A2? Because you can just add the audio track on top and drag it around to see how the lengths compare. Use the magnet tool to 'snap' tracks if you want to sync the start.