In some CSLA buildings, window glass causes smoke and light flares to be invisible when viewed through it. This presents balance and gameplay issues when using these buildings - for example, a player might see through a smokescreen by using one of these windows, or be unable to spot an approaching vehicle with its lights on.

Buildings discovered where smoke and light flares are invisible:
land_csla_shed_ind02
land_csla_panelak_2p
land_csla_apub_01

Buildings discovered where smoke and light flares are visible in front of the glass on heavily patterned windows:
land_dom_o2i_02
land_dom_o2i_03_v2
land_dom_o2i_03_v3

This list may not be complete.