I see the picture, but as you do not explain what the “incorrect symbols” are nor what they should be in your opinion, it does not tell me much.
In any case, all those Locale environment variables have not much to do with it. The page should have a proper encoding going with it (which your browser can show you, but as you do not tell which browser I can not tell you where to click to see it) and then there should be fonts available that offer the correct glyphs for the character codes.
You might be missing a font that can display those symbols. Since you wrote that it happens in two different browsers, that points even more into this direction.
sorry about not including additional info:
in “years active” section there is russian “ц” symbol (pic, third line ‘Search “-”…’) must be dash, or theta must be middle dot:
as @shundhammer mentioned there is can be issue with missing fonts but i cannot recognize which font is missed (i can send a list of installed noto-sans fonts if you need)
The coding of the page is UTF-8. Can you check on Brave if that interprets as the same?
I doubt this because when a correct glyph can not be found in the fonts available a predefined character (often a ? in a black square) should be shown. Not some arbitrary character.
oh, i solved this for firefox - i checked now that wiki using an arial font, so i installed ffetchmsttfonts package which fixed it but for brave not
i installed brave from here (include their repo in zypper) - actually i installed it just for checking my issue on other browsers
just to continue experiment: the same issue with chromium browser (i remember that brave based on chromuim too but i thought that can be only related to him), but now there is only issue with dash
i can only assume that chromium cannot take some system fonts and he use their own for show but it somehow conflicts with cyrillic letter codes (honestly, i didnt know how it actually works in browsers )
but anyway i am prefer to use my beloved firefox, so i will mark this thread as solved - thank you so much, @hcvv and @shundhammer