Tk Source Code

Since 8.6.9, the background and foreground colors of ttk::treeview items are not drawn anymore.

I can confirm that this issue does not occur with version 8.6.8.

Here is a quick script to test the issue:

package require Tk
pack [ttk::treeview .t] -padx 10 -pady 10
.t tag configure redandblue -background "red" -foreground "blue";
for {set i 0} {$i < 15} {incr i} {.t insert {} end -text "Item $i" -tags redandblue}

Platform Linux

Thanks for the report, however this was already reported and already fixed.

Closing as duplicate of [509cafafae].