Template documentation links with spaces are broken

[sebastian-berlin-wmse]

Clicking on "Template documentation" in the "Choose column" step splits templates containing spaces. The result is two tabs, one with the each part of the URL.

Steps to reproduce:

• Click "Generate Spreadsheet".
• Add any directory and click "Next".
• In the "Choose columns" pane under "Template", click "Art Photo".
• Click "Template documentation".

Actual result

Two new tabs are opened, one with the URL https://commons.wikimedia.org/wiki/Template:Art and one with photo/doc.

Expected result

One tab opens with the URL https://commons.wikimedia.org/wiki/Template:Art Photo/doc.

More information

I have only tried this on Ubuntu 20.04 and with Forefox 97.0 as default browser. There is nothing in log about this. Maybe there should be an entry when opening a URL.

[Abbe98]

A fix (#164) will be available in the next release.