`paste` HTML issue when pasting `block` node

1

I’m trying to paste paste HTML that after parsing return math_display (block) node. Parsing works fine but the problem is with pasting. I tried to debug and I found that in replace method, tr.replaceRange is called and inside of it below

    if (fitsTrivially($from, $to, slice))
        return tr.step(new ReplaceStep(from, to, slice));

returns false and instead of replacing empty paragraph with my math_node, the content of math node (text) is inserted into paragraph. image

Above both openStart and openEnd are 1.

Any suggestions why it does not work?

2

Any suggstions? What openStart and openEnd are? My desired behaviour would be: that if the cursr is in empty paragraph, doPaste should replce that empty apragraph with the pasted content which is not the case.