Unable to copy paste into the Image Caption

Issue Summary

Unable to copy-paste text into the Image Caption

This is reproducible: yes

Steps to Reproduce

1. Login to a Confluence instance
2. Navigate to a Space ->Create a page -> Add an image to the page
3. Type a sentence, copy it and paste it into the image caption area

The possible cause of this issue is that the text in confluence is in the format - <p>This is a test site for testing </p>

When we copy text from an external editor the format is - This is a test site for testing.

The existence of the tags - <p> </p> might be the cause of this behaviour

Expected Results

The copied text should be pasted into the caption area

Actual Results

The copied text gets pasted outside the caption area

Workaround

Currently, the workaround is to type in directly or copy the text from an external source which has no formatting applied to the text and paste it into the caption.