Urxvt crashes when XFT font is chosen and tabbedex is used

[tzok]

When I close urxvt I am getting either a SIGSEGV error or a message "Error in `urxvt': corrupted double-linked list: 0x000000000284c6f0"

I have tried to narrow down the problem and found out that it is present only if 1) I use tabbedex AND 2) I use an XFT font. If either 1) or 2) is changed (I disable tabbedex OR I choose a non-XFT font) then everything works fine.

I am using rxvt-unicode 9.17 and tabbedex 0.4. My rxvt-unicode comes from Arch Linux package meaning that it has the following compilation flags:
./configure
--prefix=/usr
--with-terminfo=/usr/share/terminfo
--enable-256-color
--enable-combining
--enable-fading
--enable-font-styles
--enable-iso14755
--enable-keepscrolling
--enable-lastlog
--enable-mousewheel
--enable-next-scroll
--enable-perl
--enable-pixbuf
--enable-pointer-blank
--enable-rxvt-scroll
--enable-selectionscrolling
--enable-slipwheeling
--enable-smart-resize
--enable-startup-notification
--enable-transparency
--enable-unicode3
--enable-utmp
--enable-wtmp
--enable-xft
--enable-xim
--enable-xterm-scroll
--disable-frills