Describe the bug
If you have wrapping enabled in neovim-gtk (:set wrap) and you have a long string of text which contains words of varying lengths (such as the string "foo ba " repeated until wrapping starts), some of the words don't appear to actually render. Interestingly enough, the only words that don't render are ones which are shorter than the longest word in the string.

Technical information (please complete the following information):

• OS: Fedora 33 x86_64
• Neovim version: master
• Neovim-Gtk build version:https://copr.fedorainfracloud.org/coprs/yalter/neovim-gtk/build/1650863/

Some other info that might help:

• Pango version: 1.47.0
• GTK version: 3.24.23