I think making the chat/notifications window twice as wide was a bit excessive.
Regardless, puzzle notifications are nearly unreadable. See this example:

And, BTW, I have HTML code here (not visible) to actually show the photo, but contrary to the notes, the HTML tags are not converting the text into a photo.
Thanks Boots!
This is a known bug. I hope to fix it in the next patch.
Regarding chat size, you should now be able to add these options in your options.txt file to adjust manually:
"chat_width":"300",
"chat_height":"30",
Those should return your window to its original dimensions.
Thank you for the quick response. I am going to experiment with the window sizes via options.txt, to determine the optimum window size for my needs.