1ad4c1e2a6
AddSourceLine's line buffer is pre-built for exactly 30 entries, so any item tooltip that exceeds that dies with Core\Tooltip.lua:56: attempt to index field '?' (a nil value) on every hover, and the source line is never added. Easy to hit on servers with long set lists in the tooltip plus a tooltip-extending addon (StatCompare and friends) -- a 6-piece set block alone adds ~10 lines. Grow the buffer on demand instead; the clear/rebuild loops already iterate whatever size the table has.