"Double closing program" warnings upon closing the game

The bug

Upon closing the game, the following group of warnings is shown.

[14:45:39] [Render thread/WARN]: Double closing FRAGMENT program: position_tex
[14:45:39] [Render thread/WARN]: Double closing VERTEX program: position_tex
[14:45:39] [Render thread/WARN]: Double closing FRAGMENT program: position
[14:45:39] [Render thread/WARN]: Double closing VERTEX program: position
[14:45:39] [Render thread/WARN]: Double closing FRAGMENT program: position_color
[14:45:39] [Render thread/WARN]: Double closing VERTEX program: position_color
[14:45:39] [Render thread/WARN]: Double closing FRAGMENT program: position_color_tex
[14:45:39] [Render thread/WARN]: Double closing VERTEX program: position_color_tex
[14:45:39] [Render thread/WARN]: Double closing FRAGMENT program: position_tex_color
[14:45:39] [Render thread/WARN]: Double closing VERTEX program: position_tex_color
[14:45:39] [Render thread/WARN]: Double closing FRAGMENT program: rendertype_text
[14:45:39] [Render thread/WARN]: Double closing VERTEX program: rendertype_text
[14:45:39] [Render thread/WARN]: Double closing FRAGMENT program: rendertype_end_portal
[14:45:39] [Render thread/WARN]: Double closing VERTEX program: rendertype_end_portal

dpz is shown in the second column of the launcher's game log window.

This was not an issue in 1.16.5 or 21w20a.