I know Windows has a long tradition of allowing to enter unusual character with Alt and numeric keys, dating back to the “code pages” era, causing many compatibility problems when crossing a page code country border.
Code pages where limited to 256 characters (one byte worth) and I suppose the Alt entry method is limited to 8 bits: (8776)10 = U+2248 ALMOST EQUAL TO, when truncated to the lower 8 bits gives U+0048 LATIN CAPITAL LETTER H, q.e.d.
This is a Windows issue, not LO Writer.
Now we’re in Unicode era. In the standard, characters are shown as U+1234 where 1234 are hexadecimal digits. Consequently, why would you convert this number to decimal (with the risk of miscalculating) when you can blindly copy the hexadecimal code and Alt X?
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