The following happens at least with RU locale:
1) If Table width is default (10) and technologies are listed with labels, the technology selector contains 3 columns, but the 3rd column doesn't fit into the technology selector window.
2) If I reduce Table width to 2, pressing the RQ button results in a crash:

Error while running event research-queue-the-old-new-thing::on_gui_click (ID 1)
column_count can't be 0. in property tree at ROOT
stack traceback:
...search-queue-the-old-new-thing__/functions/draw_grid.lua:141: in function 'draw_technologies'
...search-queue-the-old-new-thing__/functions/draw_grid.lua:251: in function 'draw_grid_player'
research-queue-the-old-new-thing/control.lua:57: in function 'toggle_gui_window'
research-queue-the-old-new-thing/control.lua:70: in function <research-queue-the-old-new-thing/control.lua:61>
stack traceback:
[C]: in function 'add'
...search-queue-the-old-new-thing__/functions/draw_grid.lua:141: in function 'draw_technologies'
...search-queue-the-old-new-thing__/functions/draw_grid.lua:251: in function 'draw_grid_player'
research-queue-the-old-new-thing/control.lua:57: in function 'toggle_gui_window'
research-queue-the-old-new-thing/control.lua:70: in function <research-queue-the-old-new-thing/control.lua:61

1) Interesting. I seem to recall not managing to define the width of the root window to adjust to its contents. That would be the solution needed. I'll see what I can do about this.

2) Ah, yes. This label mode is written in a very hacky way. To tell the truth, I wanted to do away with it but I'm not sure it's the best idea. At the time I looked at it, I just decided to postpone refactoring it. I might be taking a deeper look into it in the near future.

I've just thought, that case 1 might be related to UI scale 1,25. But I haven't tested that.

After playing a bit with issue 2, I realized it could be used as a denial of service attack in multiplayer games, so I released a patch just now to avoid the crash. The GUI itself won't show anything pretty but, as I said before, I'll leave that for a future redesign of the GUI.