I went and looked at the "Stacked Tabs" flag and it appears to be Windows only. From Chrome://Flags- Stacked Tabs Windows Tabs never shrink, instead they stac

I went and looked at the "Stacked Tabs" flag and it appears to be Windows only. From Chrome://Flags- Stacked Tabs Windows Tabs never shrink, instead they stack on top of each other when there is not enough space. Sorry, this experiment is not available on your platform.