Clock does not correctly respond to big/small icon change

reactos-bootcd-0.4.15-dev-7194-g8be9121-x86-gcc-lin-dbg

• Switch to "large icons"
• Day, part of yeat is not displayed, only /mm/yy

• Switch back to "small icon"
• Display is too large (looks like it's the expected width for the previous case ?)

Automatically recovered after a while

Guilty code in : base/shell/explorer/trayclock.cpp