Why does my spellcheck not ignore all when I tell it to?

[finndelmundo]

I use Libre Office for writing in english and norwegian (both nb-NO and nn-NO). This time I’m writing a text in norwegian (nb-NO), but with some english words and company names. One company name is repeted many times, and although i press “Ignore all”, the spell check tries and tries to convince me to change the word.

“Versjon 6.3.1.2 (x86)
Bygg-ID: b79626edf0065ac373bd1df5c28bd630b4424273
CPU tråder8; OS:Windows 10.0; Brukergrensesnitt gjengiver:Standard; VCL: win;
språk: nn-NO (nb_NO); Språk for brukergrensesnitt: nb-NO
Calc: CL”

[gabix]

If you need to repeat that company name many times, why not add it to the custom dictionary instead of ignoring?

[finndelmundo]

Thanks, but I tried adding it, and it doesn’t seem to work.