List of steps to reproduce (step by step, including full links if applicable):

• On Wikimedia Commons, go to the upload wizard
• Upload any file
• Click "continue" to the release rights page
• Select "This file is not my own work.:
• Scroll down, open "Another reason not mentioned above"
• Paste any string of text in the box labeled "The license is described by the following wikitext"

What happens?:

• Observe that you are unable to select any specific text in the input box using your mouse.
• You can move the cursor left and right with arrow keys, but you can't change the position of the cursor using your mouse.

What should have happened instead?:

• Clicking in the text box should allow you to make text selections.
• This is problematic for license tags that have parameters; users may want to copy paste the unfilled license tag and then fill in the parameters in the upload wizard, but will have issues because they cannot easily traverse the text with a mouse.
• This problem is exacerbated for mobile users, who can only click and have no arrow keys.

Software version (if not a Wikimedia wiki), browser information, screenshots, other information, etc: