Siege Tower Bug

I believe this is a RTW bug, not EB. Troops constantly just scale up siege towers, rather than ever get to the top. Is this common?

I heald Epirus because of this big today.....

It's common with huge walls. Just don't upgrade your walls past stone walls and you'll be fine.

If your soldiers do get stuck, just constantly press stop and click on the wall afterwards. All of them will get up there eventually.