Merge from origin/emacs-28

9bdb1d0 ; * etc/PROBLEMS: Describe a crash in xwidgets due to Bubblew...
550887c ; * etc/PROBLEMS: Rearrange and update the section about cras...
c2e3cd6 Clarify "text area of a window" in the documentation
4e7e78d Improve docstring of kmacro-set-format

diff --cc doc/lispref/windows.texi
Simple merge

diff --cc etc/PROBLEMS
Simple merge

diff --cc src/keyboard.c
Simple merge