Problem:    MS-Windows: default _vimrc not correct in silent install mode.
Solution:   Add the LoadDefaultVimrc macro. (Ken Takata, closes #6451)

Problem:    Mouse codes not tested sufficiently.
Solution:   Add more tests for mouse codes. (closes #6436)

Problem:    Cannot build with Lua 5.4.
Solution:   Use luaL_typeerror instead defining it. (closes #6454)

Problem:    Removed more than dead code.
Solution:   Put back the decrement.

Problem:    Using ht_used when looping through a hashtab is less reliable.
Solution:   Use ht_changed in a few more places.

Problem:    Vim9: test failure.
Solution:   Add missing changes to hashtab.

Problem:    Build failure.
Solution:   Add missing change.

Problem:    Vim9: crash in expr test when run in the GUI.
Solution:   Break out of loop over hashtab also when function got removed and
            added.

Problem:    Vim9: crash in expr test when run in the GUI.
Solution:   Temporarily comment out two test lines.

Problem:    Vim9: && and || work different when not compiled.
Solution:   Keep the value.

Problem:    Vim9: true and false not recognized in Vim9 script.
Solution:   Recognize true and false.

Problem:    Unused assignments in expression evaluation.
Solution:   Move declarations and assignments to inner blocks where possible.

Problem:    Vim9: crash when calling a closure from a builtin function.
Solution:   Use the current execution context. (closes #6441)

Problem:    Vim9: crash when passing number as dict key.
Solution:   Check key type to be string. (closes #6449)

Problem:    Vim9: cannot disassemble a lambda function.
Solution:   Recognize "<lambda>123" as a function name.

Problem:    Not all assert functions are fully tested.
Solution:   Test more assert functions.

Problem:    Terminal2 test sometimes hangs in the GUI on Travis.
Solution:   Move test function to terminal3 to see if the problem moves too.

Problem:    Clientserver test still fails on MS-Windows.
Solution:   Expect a different error message.

Problem:    Build failure with normal features.
Solution:   Add #ifdef.

Problem:    Clientserver test fails on MS-Windows.
Solution:   Expect a different error message.

Problem:    Test failure because shell prompt differs.
Solution:   Set the shell prompt.

Problem:    Terminal window not redrawn when dragging a popup window over it.
Solution:   Redraw terminal window. (fixes #6438)

Problem:    Lua test fails with older Lua version.
Solution:   Adjust expected error messages. (closes #6444)

Problem:    Vim9: crash when function calls itself.
Solution:   Add status UF_COMPILING. (closes #6441)

Problem:    Vim9: checking for Vim9 syntax is spread out.
Solution:   Use in_vim9script().

Problem:    Vim9: line continuation in lambda doesn't always work.
Solution:   Do not use a local evalarg unless there isn't one. (closes #6439)

Problem:    Memory leak with invalid json input.
Solution:   Free all keys at the end. (Dominique Pellé, closes #6443,
            closes #6442)

Problem:    Terminal2 test sometimes hangs in the GUI on Travis.
Solution:   Disable Test_zz2_terminal_guioptions_bang() for now.

Problem:    With SGR mouse codes balloon doesn't show up after click.
Solution:   Add the MOUSE_RELEASE bits to mouse_code.

Problem:    Some other tests fail.
Solution:   Adjust tests for different assert_fails() behavior.

Problem:    Some tests fail.
Solution:   Adjust tests for different assert_fails() behavior.  Remove unused
            variable.

Problem:    assert_fails() checks the last error message.
Solution:   Check the first error, it is more relevant.  Fix all the tests
            that rely on the old behavior.

Problem:    Vim9: no check for whitespace after comma in lambda.
Solution:   Give error if white space is missing.

Problem:    Json code not fully tested.
Solution:   Add more test coverage. (Dominique Pellé, closes #6433)

Problem:    Build failure in small version.
Solution:   Add #ifdef.

Problem:    Test_termwinscroll() sometimes hangs in the GUI.
Solution:   Skip the test in the GUI.

Problem:    Vim9: filter function recognized as command modifier, leading to a
            crash.
Solution:   Clear cmdmod after freeing items.  Do not recognize a command
            modifier followed by non-white space. (closes #6434)

Problem:    Terminal2 test sometimes hangs in the GUI.
Solution:   Move some tests to other files to further locate the problem.
            Set the GUI to a fixed screen size.

Problem:    Vim9: not enough type checking in Vim9 script.
Solution:   Use same type checking as in a :def function.