Unable to save Comments and Descriptions that contain pasted images

[Kerrie]

Today, myself and colleagues are all having problems saving Jira tickets if we included pasted images in both Description and Comments 

Clicking save invokes the following error:

I have to delete all the images, save the text, then edit and add the pics back in and it sometimes saves, sometimes not 

There is no unusual formatting as the message implies, and this was not a problem last week 

It is absolutely imperative that we can continue to paste images in to our stories and it is causing significant delays to our work flow having to faff about deleting and saving images and trying again