Hello. The title might be confusing, so I will present the reproduction steps :
• open Visual Studio with the extension installed
• open any solution which contains at least 2 files
• open some file A using the extension's open file dialog
• close file A (ensure there are no tabs open)
• open some file B (different from A) in the same way as A
• notice as file B is opened in a regular tab, but then focus is switched right away to a temporary tab with file A (the last file opened)
This happens with the current latest version (1.14.0). Also (which might be useful to know) the focus after opening a file is on the file name in solution explorer (if it is visible), not on the newly opened tab (apparently only when opening a tab from a state where no tab is open).