Image title text and alt text containing special characters is lost

Summary

If the title text contains a special character (e.g. ?, : , ...), the title text and "alt text" are lost when the page is saved. For example: "Does this work" will persist, but "Does this work?" results in the entire string being lost.

Steps to Reproduce

1. Insert an image in the editor
2. On the property panel, click "properties"
3. Add some "title text" and "alt text" for the image that contains special character (e.g. ?,:...) and save the page
4. Hover over the image in view mode (or inspect the markup to check the value of the title attribute)

Expected Results

The inserted text should be visible.

Actual Results

The text is not visible and the text is lost in the image proprieties