Lock the docked track(not hide track with clicking splitter)

[Enlih_O]

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I missclick the splitter sometimes when I just want to focus to the master track.
It's a bit frustrating and I suggest the two way to solve this problem.
1) Make the option "Mixer>Layout>Lock the docked track"
2) Change the settings to hide track only with right-clicking the splitter (like browser and event editor in pianoroll)

Please consider it. Thanks.