MainMenu: previously hidden menu item isn't displayed again

[wp]

Found the guilty revision to be

  SHA-1: f6c39c019dcb4bbd8371ab322206239644fc4d83
  * LCL: implement MDI for win32. Issue #36582, based on patch by Kostas Michalopoulos, attempt 2
  git-svn-id: trunk@62745

committed on March 12 2020, by Ondrej.

Unfortunately this commit contains a lot of changes, and it is difficult to extract where visibility of the hidden items is affected.

[zoltanleo]

Somebody create a new ticket in the bug tracker, please

[wp]

Reported as https://gitlab.com/freepascal.org/lazarus/lazarus/-/issues/39458.

[zoltanleo]

Thank U Werner

[wp]

The issue has been fixed by Ondrej in trunk/main (https://gitlab.com/freepascal.org/lazarus/lazarus/-/commit/89cd2a10452bbd3630775feefc9422fb23ab8ef8).

[zoltanleo]

The issue has been fixed by Ondrej in trunk/main (https://gitlab.com/freepascal.org/lazarus/lazarus/-/commit/89cd2a10452bbd3630775feefc9422fb23ab8ef8).

Perfect.  Thanks for the help