"Error rewriting document" when trying to save changes after entering text

Steps to reproduce:

• Create/open a project
• Drag and drop one of the text components, e.g. Text Input from Component Library to Form Editor
• Type something to its text property in Property Editor (don't press enter or click anywhere after entering the text)
• Press Ctrl+s to save changes
• -> Text you entered is lost and "Error rewriting the document" message is shown.