Bug with large number of items in the future in firefox. What to do with it?

Very long could not understand why I have items with the term in firefox, which are below other elements still overlap them. In other browsers everything was normal.

After a few hours of picking in the code I finally came to the conclusion that it depended on the number of items in the future and when I began alternately to remove from it elements at some point everything fell into place. It turns out that firefox is working correctly only with a certain number of items in the future. To be more precise. It works with no more than a hundred elements.

It breaks down the whole concept of my project. Has anyone faced this problem? Are there any methods of its decision?
July 8th 19 at 16:42
1 answer
July 8th 19 at 16:44
What is the problem to write by the developers of FireFox, and giving them examples of where a bug is reproduced successfully?
If the problem is specific to FireFox, that will solve only the developers of FireFox.

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