Spade symbols on CLI

I just installed asterisk-1.4.20.1 on my LaFonera and used core set verbose 4 to enable the level of verbose messages to be displayed on CLI. Ironically, every single message displayed is preceded with a spade character. I don’t recall seeing this on an asterisk-1.4.19.2. Can anyone please tell me how to disable this spade character?

Apparently, this spade symbol has also infected asterisk-1.6.0-beta9 running on my LaFonera. Please kindly fix this.

OTOH, the spade symbol has disappeared from asterisk-1.4.21.1 running on my LaFonera. Thanks for fixing this.