Currently this is not possible and I'm not seeing a simple property tweak that can be applied to the tab control that allows for this. I'll log it to investigate in more detail in a future sprint.
i would like a change for that, too. In the Schema Browser i use "Tabbed (multi line tabs)" and i would love a setting that would keep the rows static where they are instead of bringing down the active row with all other tabs in that row:
When clicking on "Jobs" the top line goes all the way down and the five tabs with "Favorites" move one up.
(I deactivated like 50% of the possible Object Type tabs to keep it compact.)
The next beta has a new option added to the Editor | Display page in Options. Lock tab positions is a child option of the existing multiline tab option and it leaves tabs in the order in which they were opened and does not rearrange rows. The default is unchecked.
Just an update... this will be done soon, but not in the next beta as previously stated.
We release betas every Monday, but this change ended up snowballing into some management of our Options window, moving a few things here and there, etc. and we have no QA in house today. I'd like this to pass the internal sniff test before I unleash some garbage if you know what I mean. The option will also be more centrally located as it will apply to multiple tab controls.
That's the right option. We had some internal discussions about where it should go after Mike's post above. For now, the tab-lock option only affects the Editor and Grouped describe dialog. I have a to-do item to add it to the Schema Browser as well.