Is there a hint to configure Crome, current version, that the code-mirror fits into the confluence code editor window? The code mirror is only displayed on the half of the source editor window. It could also be that there is the hight fix coded.
See code from Browser Developer Tool (F12):
source-code-editor-placeholder
element.style {
height: 524px;
}
...
.CodeMirror {
height: 300px;
...
OK, now I found a related question, already close with a solution.