Paste text without formatting when editing image

[rogi]

When adding a text to an image and pasting text in text in in the text field, text formatting (color, size, font face, etc.) is preserved.
But it sometimes makes text unreadable (for example when text is dark and the background of is also dark).
So the text should be pasted without any formatting (as plain text).

[xnview]

please describe steps to reproduce?