Descriptive Problem Summary:
When you have many animations they might break and display incorrectly after some time

Numbered Steps to Reproduce Problem:
1)Download and run the test case https://drive.google.com/file/d/ 1eKHRN_vsJeWIOrsq_Oa_laVh77lOZAGe/view?usp=sharing
2)Wait for some time, watch the animations play
3)Notice how animation breaks. Press "Spin" button to see how it breaks your character

Expected Results:
Smoothly work of animation() like in 513 version
Actual Results:
Animations breaks when you play your game

Does the problem occur:
Every time? Or how often?
After some play time, depens on the amount of animations in the world
In other games?
Yes
In other user accounts?
Yes
On other computers?
Yes

When does the problem NOT occur?
When you don't play

Did the problem NOT occur in any earlier versions? If so, what was the last version that worked? (Visit http://www.byond.com/download/build to download old versions for testing.)
In 513 version