Create an article, then insert a link (either a web-link, an email-link or a tel-link).
Use the JCE MediaBox-Popup feature for this link.
Define a certain width and height, e.g. 600 / 800
Click [OK] in order to save & close the edit link dialogue
Reopen the link dialogue and edit the JCE MediaBox-Popup width and height, set it e.g. to 700 / 900.
Click [OK] in order to save & close the edit link dialogue
Once again reopen the link dialogue and have a look at the JCE MediaBox-Popup settings width and height. The previously changed settings 700 / 900 are lost and have been restored to the originally defined settings 600 / 800. It seems to be impossible to change the initially defined settings. Workaround: go to the HTML code and change the values there.
