Keyframes for Scale not working

this isn't really a problem of the software. This problem also occurs to me just because the weak system is not able to play and if you render, the problem itself will be solved

Thank's man, using both positiona and scale keyframing worked! Thanks alot! weird that Adobe doesn't fix this bug!

FIXED! I just turned my computer control over to an Adobe tech, who "fixed" what I've been pulling my hair out over for a week. Okay, it seems if you are using a PSD file, it does something hinky. While in the source window, go to "sequence" in the drop-down menu, select "render in to out". Yep. That was it. Much hair loss later, I'm back in business. I hope this replicates your problem and resolves your issue, Tamara. Good luck!

Annette.

I had the same problem. But I managed to fix it by going to the Project Settings and changing the renderer playback option to "Mercury Playback Engine GPU Acceleration"

Same issue here. Resetting preferences worked previously, but doesn't work now.

These endless bugs are so frustrating!

I dont know if it'll help you guys or not but nesting the clip did the job for me.

====PROBLEM FIXED==== 

Premiere Pro Version: 2019 13.15.  I had a similar problem whereby I had a project filmed at 120 fps playing in a 23.976 time frame and I was unable to get the SCALE key frames or TRANSFORM key frames to be recognized and play.  The ROTATOIN key frams worked fine for some curious reason.  My entire project was working fine and was finalized with many transitions and speed ramps but the SCALE and TRANSFORM effects under effects control would not be recognized and play.  I installed the new and latest version for 2020 14.1 and the problem still presisted so I deleted the 2020 version.

====HERE WAS THE FIX====

Back in my Prem Pro 2019 13.15 version, I went to the video clip and removed it.   Then I placed it back on a track that was empty as my clip was long without adding the speed ramps and would have blow away the other clips.  Next, I first added the SCALE key frames and then second, added the SPEED ramping (right click on the clip and go to show clip key frames \ time remaping \ speed) and then it worked fine.  So, it seems like the order of placing automation on my clip made a difference.

I hope this helps all who have this same problem.

Cheers!

I have the same issue in (2020) 14.0.3 version. This is the last vers. And no one of these suggestions could have solved the problem. My hardware is enough good for work and all updated. I've restarted, changed anchor position, changed position of frame, played around renderer and media settings, but no one worked. 

I've solved for not working scale keyframes. I'm on Premiere Pro 2020

1. Go to File>Projects Settings>General

2. Click on "Mercury Playback Engine GPU Acceleation" from Video Rendering and Playback menu

3. And you can see a preview rendering red bar changed to yellow in your timeline.

4. Done.

Good luck!

Tamarar,

I find this kind of odd. I wonder if it's because Scale can often be tied to the GPU, and that your GPU can't ordinarily process what you are requiring it to display. What kind of GPU do you have? What are the frame dimensions of your still image? Someone mentioned it could be a "lag" or "bottleneck" and that's what I also suspect. Images with overly large dimensions can sometimes display this behavior. So, if you have something like a 5K frame in a 4K sequence and only 2 GB VRAM on your GPU, that would be the cause of your bottleneck. Let me know any details. 

Thanks,
Kevin