It seems that after one of the latest updates, the query template doesn’t works correctly when there is a “post content” inside it.
To illustrate better, before the html structure was:
.querytemplate
.cc-query → post content
.cc-query → post content
.cc-query → post content
Now:
.querytemplate
.cc-query → post content, post content, post content (so the grid gets messed up because of this)