When editing the format of table of contents , there is a button named "Alle" in German UI. The help file says clicking it would apply the changes without closing the dialog.
This is only a part of the truth: Actually it applies the current format to all levels (and it does not close the dialog, of course).
It is not a problem of translation, but the English text has the same shortcoming.
"Applies the current settings without closing the dialog."
The text - which is used as extended tip - does not mention, that the setting is applied to all levels.
"Applies the current settings to all levels. Does not close the dialog."
The text is in text\swriter\01\04120221.xhp
<paragraph role="paragraph" id="par_id3155137" xml-lang="en-US" l10n="CHG" oldref="37"><ahelp hid="modules/swriter/ui/tocentriespage/all">Applies the current settings without closing the dialog.</ahelp></paragraph>
Adolfo Jayme Barrientos committed a patch related to this issue.
It has been pushed to "master":
tdf#103540 Explicitly say the button affects all levels