“The first issue is that there’s no way for you to control the brightness of the screen from the panel.”
Ah, they think LXQt is a Qt clone of LXDE. How many times should I say… ?
"The battery icon (the green circle) on the panel does not have the functionality of changing the brightness, it just shows you the battery percentage.
Really?! A battery icon just tells about battery?
“Another issue exists in keyboard shortcuts. Normally, when you add a new shortcut that utilizes the same key button as another shortcut, the older one would be removed or a notification message would be sent.”
I agree with this one: it was the only good point I could extract.
“Moreover, shortcuts don’t work if menus or popup windows (like file chooser) are open.”
“It’s very hard to add apps icons to the quick launch widget on the panel.”
“you would notice is that there’s no preview option in the file chooser;”
Update your installation!
“If you try to take a screenshot using the default screenshot tool, then after taking the shot, it will be opened in the image viewer instead of just asking you where to save the image”
I don’t know about Lubuntu but the default screenshot utility is screengrab in LXQt.
“There’s no apparent “New Tab” button in the terminal emulator”
Simply use your eyes!
“It is also worthy to note that Lubuntu comes with a system monitoring application called “qps“, but its user interface is very messy and hard to understand:”
That will be fixed before the next LXQt release.
The rest wasn’t my concern.