Glances Throw Off Keyboard Access

[RemyPorter]

Observed behavior:
When a glance is opened in an essential tab (perhaps also in non-essential tabs?) keyboard access gets confused.

Let's say I have three essential tabs. With no glances, I can access each via META+{1,2,3}, as expected. If I open a glance in any one of those tabs, META+{1,2,3} continues to behave correctly, but now META+4 will navigate to the tab with the glance in it. Opening a second glance in a different tab means that META+5 will navigate to the glance. This seems incorrect, but in this scenario at least isn't confusing.

The confusion happens if there are other, non-essential tabs open.

For example, with three essential tabs and one non-essential open, the non-essential tab is accessible via META+4, as expected. But, if I open a glance in an essential tab, META+4 now navigates to the glanced tab, and META+5 goes to the non-essential tab (which is still numbered as 4).

Expected behavior: glances should NEVER have a direct keyboard shortcut, and should be accessible only by navigating to their containing tab.

Tested in 1.12.7 and 1.12.8.

[notwatermango]

I don't think this issue directly relates to tab-numbers, this extension does not modify mapping itself but rather shows the display numbers.