In the latest 1.18.2 build all glass textures appear to be broken. This seems to be due to a typo. This is shown in the log files:

e.g.
Using missing texture, unable to load buildersdelight:textures//block/glass/crimson_glass/crimson_glass_5.png : java.io.FileNotFoundException: buildersdelight:textures//block/glass/crimson_glass/crimson_glass_5.png

Note the double / in the texture path (textures//block). This happens for all glass blocks and glass panes.