Description

When collapsing a timeline track, if there are over 5 tracks below it, some will disappear.

This is a closer look at but UE-18550

Workaround
Simply scroll on the timeline tracks to repopulate the other tracks listed.

This is not a regression since this comes from a much older bug that was backlogged.

Steps to Reproduce
  1. Open new blank project
  2. Create new Actor class Blueprint
  3. In the Event Graph, place a new Timeline node
  4. Open the Timeline by double clicking the node
  5. Add 5 new Floats by selecting the f+ button
  6. Scroll to the top of the Timeline list
  7. Collapse the first Float Track by selecting the small triangle

Result: Tracks 3 and 4 disappear

Expected Results: Timeline tracks do not disappear

Have Comments or More Details?

There's no existing public thread on this issue, so head over toAnswerHub just mention UE-42571 in the post.

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Unresolved
ComponentTools
Affects Versions4.15.14.16
CreatedMar 6, 2017
UpdatedMar 8, 2018