Comment markup dissapears
When i mark up a PDF in Acrobat pro for some reason it has started behaving differently to how it always has. No matter which comment tool i use, as soon as I leave the page I have added the comment to, the highlighted text or box added disspears. Comments added show in the sidepane and then when clicked the markup (highlight or textbox etc) shows where comment has been added but not properly (text box shows outline but no text in the box for example). Like this example:

Properties shows opacity at 100%:

And highlight text is not showing as yellow highlight as added - it shows an outline box when the comment is clicked in the sidebar pane:

Although properties show this:

Its really frustrating as I can no longer easily see when scrolling through a document where the markup comments are as it no longer keeps visible any text highlighted, sticky note or text boxes added. Comments are only visible in the sidebar. It wasnt like this until recently and I have no new updates to install. Anyone else having same issues?
