From Factorio Forum: https://forums.factorio.com/viewtopic.php?f=92&t=21277&start=20
With multiple mods the small icon picker can't display all icons.
Anson:
most of all, i would like to use the small signs with icons. but when i place one such sign, the resulting window shows only 10 lines of only 47 icons per line, a total of 470 while it should be (depending on the number of mods i have enabled) 600+ (or even 1200+ as soon as boxing2 is bugfree for me). my screen is big (1920x1100 windowed) and still a lot of icons are outside of my screen on the left and right sides :-( even when filling the screen completely, i would guess at most a total of 25x45 (=1000+) could be shown properly for me instead of 1200++ (and even less for people with smaller screens)
maybe a tabbed view could be used to have icons nicely sorted, or a window for maybe 20x20 icons with a vertical scrollbar. reducing the size of icons would be another alternative, but i saw how difficult it is to find specific icons with the old testmod and its small icons.
Possible solution scrollbar for icon selction ui.
From Factorio Forum: https://forums.factorio.com/viewtopic.php?f=92&t=21277&start=20
With multiple mods the small icon picker can't display all icons.
Anson:
Possible solution scrollbar for icon selction ui.