doc: add background-opacity needs restart

[ferrgo]

The section informing that some configs need a restart points that the specific config should have details about this. This adds the information that background-opacity on MacOS needs a restart

Some configuration options cannot be reloaded at runtime; others may only apply to newly created terminals. See the specific configuration option for details.

PS: lovin ghostty

[gigamonster256]

@ferrgo @akx Are y'all sure changing background-opacity needs a restart to work? I doesn't for me, hot-reloads work just fine. Is there a specific state you need to be in where the config reload does not work?

[ferrgo]

@ferrgo @akx Are y'all sure changing background-opacity needs a restart to work? I doesn't for me, hot-reloads work just fine. Is there a specific state you need to be in where the config reload does not work?

For me opening Ghostty without this setting and trying to enable would require a restart. If background-opacity is set and I try to change it's value then the reload is enough. Is this ur scenario? Try deleting the option on config file, restarting Ghostty and trying to set it again.

PS.: Sorry for ghosttying u, have been off for a few days.

[gigamonster256]

PS.: Sorry for ghosttying u, have been off for a few days.

Haha no worries. You were right about weirdness happening if a window was created with an opacity of 1 and then adjusted but it looks like it doesn't matter anymore: #5083

[ferrgo]

I see, indeed I had an issue that going fullscreen and back would not set opacity correctly, don't usually go fullscreen but testing now and its fixed indeed