# BUG (2.03.09/10/11/12) - Transition Timeline destination instruments not audible

**URL:** <https://qa.fmod.com/t/bug-2-03-09-10-11-12-transition-timeline-destination-instruments-not-audible/23962>\
**Category:** FMOD Studio\
**Created:** [February 1, 2026, 1:04am UTC](https://qa.fmod.com/t/bug-2-03-09-10-11-12-transition-timeline-destination-instruments-not-audible/23962 "2026-02-01T01:04:14Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![AphoticRazor](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/aphoticrazor/32/2082_2.png) [@AphoticRazor](https://qa.fmod.com/u/AphoticRazor)\
**Post date:** [February 1, 2026, 1:04am UTC](https://qa.fmod.com/t/bug-2-03-09-10-11-12-transition-timeline-destination-instruments-not-audible/23962/1 "2026-02-01T01:04:14Z")

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EDIT: I just saw that this was already brought to attention in this thread, so feel free to delete this topic:

> [@Transition Markers and Regions are not working as expected](https://qa.fmod.com/t/transition-markers-and-regions-are-not-working-as-expected/23410):
>
> I just upgraded to the latest FMOD Studio and I’m experiencing something weird with the transition markers. I’m wrapping the entire music system in a single event so I have more control over transitions. I noticed when I put a transition marker at the beginning of the event and change the playlist parameter, that event plays (transport marker running through it) but it cannot be heard. Here’s how it looks when it does not work: Destination Marker On Beginning Of Event: H…

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When a Transition Timeline (TT) destination occurs at the end of the TT (rather than within) it seems to trigger the destination instruments but they are not audible.

This bug started happening in FMOD Studio 2.03.09