[Bilgemaster]

This handy Table for Debugging Common UTF-8 Character Encoding Problems might be useful to whomever will be sorting out the Forum's database errors experienced by many users since upgrading to SMF ver. 2.0.15, as described earlier in this thread.

It will definitely help them globally-replace the gibberish now displayed instead of many special characters as now found in the Forum Archives, which were posted under the old system, such as "’" instead of that British style keyboard apostrophe (Unicode U+2019), as seen in this example from 2017.