Interaction bug-happening before

Hey there,
So I created this animation that is for when I click on the read more button, the respective description of the cms item appears. Then I click on see less and the description fades out.
The animation is working normally, but sometimes when I enter the website it happens that the description is already there. Why that? I think it’s some bug

here’s the website link:
this is the section:

here’s the read only link: Webflow - European Plasma Alliance