Why doesn't writer capitalize words after punctuation marks?

Why doesn’t writer capitalize words after punctuation marks ? eg. periods.

Make sure that that setting is enabled in Tools- autocorrect- Options for autocorrect, Options tab, and that autocorrect while typing is enabled. It works fine for me, it only doesn’t capitalize the first word of a paragraph.

Also, make sure that there is only a conventional space symbol after a punctuation mark. A non-breaking symbol will prevent automatic capitalization.

I have “capitalize the first letter of every sentence” checked. and “autocorrect while typing” is also checked. It was checked all along. i did not change the defaults. but it still is not capitalizing. also what’s an example of a conventional space and a non breaking space? aren’t all spaces the same?

No, you can insert a non-breaking space to keep two words or a valuta character and a money amount when not written together on the same line, there’s also a space that doesn’t have any width, for a purpose I can’[t remember right now.
And now is the time to give more information about your situation - LO version, operating system, what language you use.