Kubuntu 18.04 menu bar is missing in all applications

[camoltoni]

Hi, I did a fresh installation of kubuntu 18.04. I noted all applications does not have the menu bar. I can not also activate it with Alt key. I checked the styles and system config but I does not find nothing to change to bring the menu bar back.
Thanks

[acheron]

Have you added a global menu widget or titlebar button?

In Plasma 5.12 adding one of those activates it automatically, and hides the application menu bars.

[camoltoni]

Yes

Have you added a global menu widget or titlebar button?

In Plasma 5.12 adding one of those activates it automatically, and hides the application menu bars.

Yes I have that widget but nothing appears in the title bar of applications and I can't edit the theme to remove it.

[acheron]

Yes I have that widget but nothing appears in the title bar of applications and I can't edit the theme to remove it.

If you added the titlebar button, then go into Systemsettings > Application Style > Window Decorations, and in the buttons tab, drag the Applications Menu button off the titlebar preview to remove it.

Then you will need to restart any applications for their menu to come back.

[camoltoni]

If you added the titlebar button, then go into Systemsettings > Application Style > Window Decorations, and in the buttons tab, drag the Applications Menu button off the titlebar preview to remove it.

Then you will need to restart any applications for their menu to come back.

I don't have that button.

But the theme it has and I can't remove it or edit the theme

Thanks

[acheron]

But the theme it has and I can't remove it or edit the theme
[ATTACH=CONFIG]7533[/ATTACH]
Thanks

Thank is just a generic image. Not a full representation of the state of your current theme/settings.

So the other possibility is that you have a global menu widget also, somewhere.

[camoltoni]

I don't think so, I did a fresh install and I don't change anything of that
thanks again

[acheron]

If you have the widget and did not realise it, you will have a section in

~/.config/plasma-org.kde.plasma.desktop-appletsrc

containing

plugin=org.kde.plasma.appmenu

Or for titlebar

~/.config/kwinrc

will have a line with

ButtonsOnLeft=

or

ButtonsOnRight=

with a 'N' in the string after the equals.

[sithlord48]

You do in fact have that button in your first screen shot its the second button on the list "Application M" is the text shown

[acheron]

You do in fact have that button in your first screen shot its the second button on the list "Application M" is the text shown

That is in the 'pool' of things you can drag to the mock titlebar, not set on that titlebar itself.

[sithlord48]

Yes in the list of buttons you can add.. Thanks Acheron

[camoltoni]

If you have the widget and did not realise it, you will have a section in

~/.config/plasma-org.kde.plasma.desktop-appletsrc

containing

plugin=org.kde.plasma.appmenu

Or for titlebar

~/.config/kwinrc

will have a line with

ButtonsOnLeft=

or

ButtonsOnRight=

with a 'N' in the string after the equals.

Thanks to all
I delete the section with

plugin=org.kde.plasma.appmenu

And now the menus are as expected.
I think is a bug with the theme