Problem:    Test for fuzzy completion fails sometimes.
Solution:   Use a more specific file name to minimize the chance of matching a
            random directory name. (closes #10854)

Problem:    A "below" aligned text property gets 'showbreak' displayed.
Solution:   Do not use 'showbreak' before or in virtual text. (issue #10851)

Problem:    Cursor positioned wrong after two text properties with virtual
            text and "below" alignment. (Tim Pope)
Solution:   Do not stop after a text property using MAXCOL. (closes #10849)

Problem:    Missing part of change for "override" flag.
Solution:   Add the missing change.

Problem:    Substitute that joins lines drops text properties.
Solution:   Move text properties of the last line to the new line.

Problem:    Text property cannot override 'cursorline' highlight.
Solution:   Add the "override" flag to prop_type_add(). (closes #5533,
            closes #8225).

Problem:    Cursor positioned after virtual text in empty line.
Solution:   Keep cursor in the first column. (closes #10786)

Problem:    Crash when adding and removing virtual text. (Ben Jackson)
Solution:   Check that the text of the text property still exists.

Problem:    "delmenu" does not remove autocmmands. Running menu test function
            alone fails.
Solution:   Delete autocommands Make sure there is at least one menu.
            (closes #10848)

Problem:    execute() does not use the "legacy" command modifier.
Solution:   pass the command modifier in sticky_cmdmod_flags. (Kota Kato,
            closes #10845)