For a long time, CTRL - l and CTRL - h were not implemented. I implemented them , and they should be available on the next version of VsVim. They work through groups of tabs. At the same time, if you want to get them, you can capture the AppVeyor assembly.
CTRL - j and CTRL - k are also available. However, they do not move between tab groups; they move between the actual window partitions of the horizontal Visual Studio window. It is hard to display Vim buffers / windows / tabs on Visual Studio tabs / tabs / tabs / tabs / docs ...
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