Inserting a link to a Confluence-page in jira-Ticket results in error

Hello,

if we insert a link to a confluence-page in a jira-Ticket we get an error, if the title of the confluence-site contains a colon. The search for a confluence-page replaces the colon with the encoded characters %3A.
Clicking the button for inserting the link results in the error message, that the confluence-site can't be found.
If we replace the encode characters %3A by the colon manually, the inserting is sucessful.

You can see the Workflow in the attached file.
I hope you can understand the workflow, because we have German as locale.

Kind regards
Sebastian Heybach