Incorrect any theme view

I'm use mocp 2.5.2, and in any theme, except standart blue theme, i have ugly blue rectangle in time-block, see screenshot.

I try install different's themes, but nothink happens.

Screenshot with bug (darkdot_theme):
No ugly rectangle (standart theme):


I cannot see any images on those URLs, but they may be embedded in JavaScript.

E-mail mocmaint the screenshots.