Most people probably don't realise this, but this forum has had two editors for a number of years. One is the xenForo default editor, and the other is a custom editor I made years back I called BBCEd.
All the settings for which editor you use was lost during the upgrade. You can find the setting under Account Settings > Preferences > Editor.
<CMP0008:0022:0000
<CMP0009:0022:0000
<CMP0010:0022:0000
<CMP0011:0022:0000
<CMP0012:0022:0000
<WAI0006<SOU0012
<CMP0008:0024:0000
<CMP0009:0024:0000
<CMP0010:0024:0000
<CMP0011:0024:0000
<CMP0012:0024:0000
<WAI0006<SOU0012
<CMP0008:0026:0000
<CMP0009:0026:0000
<CMP0010:0026:0000
<CMP0011:0026:0000
<CMP0012:0026:0000
<WAI0006<SOU0012
<CMP0008:0028:0000
<CMP0009:0028:0000
<CMP0010:0028:0000
<CMP0011:0028:0000
<CMP0012:0028:0000
<WAS