uBlock Origin 1.3.4, 1.3.5, 1.3.6, 1.3.7 (dev build)
Palemoon 25.8.1 (x64)

my testing method

1. create new blank pale moon profile
2. create new custom toolbar, put Location component on it.
3. install ublock origin
4. open pale moon via pinned icon on task bar
5. check for custom toolbar with location component visible
6. press CTRL+W to close window
7. repeat step 4-6 until custom location toolbar disappears (takes 3-4 open+close operations)

i also posted this on the Palemoon forum to which the developer did repsond.
http://forum.palemoon.org/viewtopic.php?f=15&t=10352