Another problem is, from v17.0.0 beta 1, menu Macros -> Customize… -> Customize Macros dialog box -> Add
Try to add a new macro, ex.delBlankLines.jsee

The file name (delBlankLines) will not display on “Macros Toolbar” immediately. Until close and launch EmEditor several times.
If v17.0.0 beta 1 use menu Macros -> Select…, this is ok, it will display on “Macros Toolbar” immediately.
(“Select…” function is select only one item per time.)

And V16.9.3 “Customize Macros dialog box -> Add” is ok.