Solved After 7.0.3495.26 (Stable channel) (arm64), Single tab is a stack itself and cannot be remove from stack?

[PaRr0tBoy]

System and Vivaldi Version:

Vivaldi 7.0.3495.26 (Stable channel) (arm64)
macOS 14.7

Description

Before I updated yesterday, a single tab is a tab. After updating, every new tab is a stack now.

And here is my settings about stack, which I believe the same as yesterday before updating.

What have I done trying to fix this:

1.Go through every settings but didn't find it.
2.Read this minor update release notes, found nothing useful
3.Unload all of my .js and .css modification, but still, single tab->stack

My question is:

1.Which setting might affected it?
2.How can I change this behavior while keep two-level stack? I know I can switch to compact or accordion to make stack with single tab looks like a tab but that's not what I want

Thank you in advance for any assistance or helpful infomation.

[PaRr0tBoy]

@PaRr0tBoy Damn I'm a dumb ass. I accidently lock second tab level.