Changes (as compared to 8.16) include:
* When connected to a 5.0 server compiled without PROFILING option and with Query Profiler/SHOW PROFILE feature enabled SQLyog would still send PROFILING-related queries. It was not properly detected that the server did not support this. MySQL versions from 5.1 and up (also when compiled without PROFILING option) were not affected.
* In DATA and RESULT tabs/text mode unicode/non-ASCII characters could cause a change of the font that was used for displaying data. This was an old bug from when introducing full unicode support in 6.0.
* In RESULT tab BLOB/TEXT data would sometimes not display beginning of data in GRID. This bug was introduced in 8.15.
* EXPLAIN EXTENDED option is now disabled as default in Query Profiler.