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ivan tkachenko authored
Because of const/non-const issues, iterator got invalidated in the loop, which led to a crash. Cases that trigger it: interaction with a thumbnail while the effect is returning to initial state and shuts down. For example, slightly dragging and releasing a thumbnail such that both TapHandler & DragHandler would react and play each their own transition (yes, it's another bug); or by pressing Escape key while dragging. (cherry picked from commit d3a5a72a)