This problem is getting impossible and I need a fix for it. Let me describe it as best as I can.
I am building slide set including images that I copy and paste to a slide. They are NOT links!!! They are generally JPEGs.
Then for some strange reason, the slides in the preview pane (I am not sure what it's called... its on the left) in Normal mode or Notes mode becomes blurry or is completely gone in the preview pane.
If I delete the image and do undo (alt e u) then it appears normal. I have to do this every couple minutes on several slides in my deck.
Sometimes, when I go to the slide in Normal view, there will be an icon with 3 squares and 3 dots and when I click on it nothing happens. The image is gone?!?!?!?!?!?!?!?!??!
I have several slides sets that I have maintained for several years and some perfect image I found several years ago mysteriously disappears!?!?!?!
Finding a replacement is sometimes difficult and always time consuming.
I have recently begun saving my slide sets in ppt format and working with them in ppt to avoid this problem. I HATE PPT!!!! But it does not delete these images.
This problem isn't new.
When I do Google searches for this problem, I find lots of complaints about it but I have not yet found a solution.
And if someone tells me its a stale link in my presentation I will scream

It is an image that has been copied and pasted. Its there and then suddenly without warning it goes away leaving this icon with 3 squares and 3 dots in the upper LH corner of the slide.
Is there a solution to this, or is just Impress simply fubar'd?
This is almost a show stopper. I have been putting up with this for several years now.
Can somebody please give me a fool proof, simply method for resolving this problem.
Please pardon me if I sound impatient, but I update AOO constantly and the problem persists. Yes, my patience is wearing thin.