No longer able to add new guides while in transform

[Moderator moved from Adobe Creative Cloud to Photoshop​.]

So, a new thing I noticed since updating to the latest version: I can no longer add a guide while I have a layer in Transform (command+T on macs)! This is so frustrating... What good is a reference point, which I use ALL THE TIME for our web graphics, when I can't drag or even create a guide to the transformation's reference point? When attempted the old fashioned way through the dropdown menu, guides are grayed out. This means aligning concept elements just got a whole lot harder for creating splash pages. I've been using Photoshop since 1997 and am really irritated a lot of these tools changed (for the worse - Free-Transform isn't even consistent now - *sometimes* it works as newly advertised while just a few minutes later it reverts to the old way and then *other times*, neither way works!). This is really affecting productivity; not just mine, but our whole team's. They all have the same issue.