I've noticed in the latest version of Directory Opus that the very top and very left sides of the maximized lister are not registered as part of the window. Basically, there's a couple-pixel (possibly even single-pixel) gap between the left side of the lister and the left edge of the monitor. This happens on all three of my monitors. The lister body is affected but the titlebar still reaches the left edge. Clicking in that "void" space will interact with whatever is behind the lister at that point. Same goes for the top - if I move my mouse all the way to the top of the screen when DOpus is maximized. it will grab the window behind it (or just lose focus if it's only the desktop behind it). This makes it VERY tedious to move the window around my workspace quickly because I can't reliably throw my pointer to the top of the screen to grab the window; I have to make sure to grab a chunk of valid titlebar. Including a screenshot. If you zoom waaaaaaaaaaay in, you'll see a single-pixel blueish line on the left. That's my desktop background showing through a maximized lister window. Notice how the top titlebar extends to the edge of the screen. (the left edge of the image is the left edge of my screen). Interestingly, the app behind the lister does not show through the hitbox gap at the top. In summary, if I click at the very top or very left of my screen when the lister is maximized, the click is not registered by DOpus, but rather by whatever is behind it. It's like the whole app needs to be shifted up and to the left by one pixel.
Dopus 13.10
Windows 11 Education 23H2 build 22631.4037
Edit: I have a 3-monitor setup and I just noticed this only happens on the secondary screens, not my center screen.
oh wow it's actually perfectly clear in the uploaded screenshot (I didn't expect that) - see how my desktop is visible to the left of everything except the title bar? I can click through that gap. The same gap exists along the top but doesn't have the graphical passthrough for some reason.
Edit: though the titlebar goes all the way to the edge, I can still click behind it at points. It seems that the logo/favicon/app icon/whatever it's called does go to the end. When I click along the left edge of the titlebar, I either (a) interact with the element behind the window, or uniquely (b) interact with the app icon and open the app menu (window controls, close, etc).
Are the monitors using different DPIs to each other?
If so, Windows is scaling Opus's windows when they are on monitors with a different DPI to the primary monitor. (This happens because Opus is DPI-aware but not per-monitor-DPI-aware; at least not yet.) Windows has bugs in how it does that scaling which can mean the edges of the window don't register. (Clicks can even go through to a window below, which is especially bad when trying to close something via the top-right pixel, and it closes the app behind it instead.)
You can see the same problem in some other software, including parts of Windows itself. I think Task Scheduler and Event Viewer may do the same, but can't double-check it on the machine I'm on right now. I can find some examples tomorrow, if needed.
Going back to Opus: If the DPI has changed since it was launched, that can also have similar results. To update it to the current DPI, use File > Exit DIrectory Opus to completely close it down, then re-open it.
