Unresponsive Animation Sequencer in 5.7

Upgrading from 5.5.4 to 5.7 I noticed the play head is not jumping to the frame below the mouse in the timeline, left clicking does nothing. Scrubbing is also noticeable more stubborn, I have to jerk the mouse quickly in order for the play head to lock to the mouse.

The Level Sequencer works as fine though, clicking jumps the play head, scrubbing is responsive.

Is this a bug or some new changes to 5.7?

I just want to bump this thread because I’m experiencing the same thing. I have spent hundreds to maybe a thousand + hours in the editor working for a game studio for 3 years and Sequencer is at its worst since I’ve started using it. I cut my teeth in 4.27 and it was leagues more stable and reliable. If I had started my UE career in 5.7 I don’t believe I would have stuck with the craft.

Yes- my play head no longer jumps to the keyframe I am attempting to select. Sometimes it does but then the functionality disappears. Scrubbing is rage inducing as it just jerks around as it wishes. I am on a RTX 5090 with latest CPU with appropriate scalability settings so I am not hardware bound. The UI layout of actors in the sequence is so muddled now I cannot read/traverse a complex sequence as easily in 4.27. It makes me feel dyslexic or like I am hallucinating. I cannot orient in the new dark Sequencer look- every line looks too similar. I really do miss that 4.27 higher contrast color scheme and tighter visual hierarchy UI experience. Less is more!

Adding animations to characters often don’t show up in the Sequencer!!! I have to save, shut the engine down, and reopen the project for the animation tracks to show. WTF!

Same with undo/Ctrl-Z. I can’t undo because somewhere setting a key value is still active and the engine says “can’t undo while setting a key value”. I have to save and restart.

Please Epic- I am on your team and a huge advocate for the engine. But quality of life in my career has tanked because of how buggy, jittery, unreadable, clumsy, and unreliable using Sequencer has become.

@Hallonsaft I haven’t seen this and haven’t been able to reproduce the playhead not jumping to the frame below the mouse in the timeline. Is it still happening for you? Mind shooting a brief video or screenshot?

@SolarMx6 Sorry for the troubles. Is it possible you have Snap to the Pressed Key toggled off? If you have some specific reproducible examples of the bugs you’re encountering, can you file them here: https://unrealbugsubmissions.epicgames.com/s/?language=en_US

Thanks for your reply @Max.Chen I will capture some video next time I experience the woes. At this point I’ve just adapted to my circumstances. Not ideal but I am able to get my work done.

Same problem here. Click to move scrubber doesn’t work for migrated projects to 5.7.4, nor fresh new sample project from 5.7.4. This problem is very inconvenient and a bad downgrade of UX.

Steps to reproduce: Just any 5.7 project really. Open UE 5.7.4, make new UE project from template, I used Third Person C++ template for example. Open any anim montage, for example AM_ComboAttack, or any anim sequence, for example MM_Attack_01. Now try clicking anywhere for the scrubber, the scrubber doesn’t move if you click, it doesn’t move if you drag slowly. It only moves if you drag your mouse in a sharp motion.

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I think the problem listed here is with the Animation Sequencer, not with an Animation Sequence/Montage.

How to Animate with Sequencer | Unreal Engine 5.8 Documentation | Epic Developer Community

Regardless, I can attest to your situation. Within any Animation Sequence or Montage, either in 5.7 or 5.8, you have to hold down the mouse button and move the mouse for the slider to move as well.

Clicking won’t do anything for some odd reason.

I’m almost sure from previous versions that this was working, though. Need to test it again to make sure.

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Yes this is a problem with Animation Sequencer.

I just tested, and this works fine in UE 5.5.4. In UE 5.6.1, the issue is there.

I didn’t know this issue was introduced in UE 5.6, because I migrated directly from UE 5.5.4 to UE 5.7.4.

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@shookypooks @Dayaern @SolarMx6 @Hallonsaft it took me a while but I finally understand the problem - it’s with the timeline in the animation sequence and animation montage asset editor. I’m looking at getting a fix in for a 5.8 hotfix (no promises, but will see what I can do).

Fix has been submitted and it will be coming out in the next hotfix, 5.8.2

Thanks, but is there a way to fix this for previous Unreal versions, such as 5.7, for example manually with an Editor module? Or is there a link for the git commit for the hotfix I can refer to?

Unfortunately not for 5.7 since there’s no plans for additional hotfixes there.

Here’s the git commit for //UE5/Main:

https://github.com/EpicGames/UnrealEngine/commit/ba8b88ccde0fb5f0daf92cc2857b4d0f7061eea3

Thank you for the link!