The
goal of this criterion is to ensure general desktop-related functionality for different
types of applications. A small number
of non-working applications (caused by applications themselves or the desktop environment) is not a violation of this criterion.
For each release-blocking desktop, the desktop environment must perform regular operations like windows
close/resize/maximize/minimize/fullscreen (when supported/applicable),
windows switching, using windows on virtual workspaces, and similar
common operations as expected. Common application content such as
regular application windows, video output, and games must be displayed
correctly.
Footnote - "What does this cover?":
The
goal of this criterion is to ensure general desktop-related functionality for different
types of applications. A small number
of non-working applications (caused by applications themselves or the
desktop environment) is not a violation of this criterion. An example
of a violation
would be e.g. if a significant number of QT applications couldn't be
resized (but they should be), or if all Java applications failed to
display any content.
Footnote - "Difference from the Basic criterion?":
Compared to the similar [Basic criterion](link), this covers all applications (including third-party ones), not just pre-installed ones. More window operations are required to work, e.g. the explicitly-stated virtual workspaces workflows.