BCZ2 Texture scrolling effect no longer activates after UDMF

Video is from uncapped, but this issue happens the same on next. Issue started appearing after udmf-full merge.

mentioned in merge request !1783 (merged)

changed milestone to %2.2.11

Linedef 268, tag 4. Linedef Action 503, "Scroll Wall According to Linedef (Accelerative)"

mentioned in commit 2c59d800

mentioned in merge request !1788 (merged)

mentioned in commit 15a40e59

mentioned in commit 8ed11cfa

mentioned in commit f94c25c0

closed with commit f94c25c0

closed with merge request !1788 (merged)

mentioned in commit 44764cb1