When trying to build some corners in my base I noticed that some of the blocks don't seem to align properly. Specifically it's the triangle and inner corner blocks. Can't seem to embed image so adding link to screenshot. https://steamcommunity.com/sharedfiles/filedetails/?id=2139190881
You can add screenshots to posts by just dragging them from your screenshots folder onto the message and it'll upload them. Also, that shape's not misaligned. It's a completely different shape from what you're connecting it to. There are two different corner pieces like that, but the one you've used is for connecting to a different slope block that transitions to a wall block.
In addition to what @Vermillion said - In game Screenshot are taken with F7 - the Game saves it here - > C:\Program Files (x86)\Steam\steamapps\common\Empyrion - Galactic Survival\Saves\Screenshots To the wrong Block - > the right one would be While the one you have used was