Whether I use this LO version on Win 10 or on Linux the Spellchecker does not function at all. Searching on google indicates that a dictionary must be downloaded - did that & spell checker worked for one time only then reverted to not functioning. This seems to be an urgent bug needing fast resolution if not already addressed.
- Read this tutorial and this troubleshooting guide.
- Read these guidelines and ask a good question.
P. S. Claiming a bug with no real substantiation makes you look like an arrogant dork and reduces your chances to be helped.