Quickmask feature change

[jayheifetzart.com]

Hello. I like to  use quickmask to refine selections, and one of my favored tools was being able to use a hard-edged brush at one end of a selection's straight line, and holding down the shift key, click at the other end of that straight area to connect the selection areas with an edge that was also straight; now, however, I can't get that feature to work. Is there some setting that has changed or that I've changed that has disabled that feature, becuase I'd really like to use it again. Thanks!

[Semaphoric · Accepted solution]

It's working fine for me. Do you possibly have your foreground color set to black?

[jayheifetzart.com]

Thanks ... that shouldn't and hasn't mattered since foregreound white enables the mask and foreground black restricts it ....

[jayheifetzart.com]

Thank you ... that solves the problem!