Out of curiosity I was just wondering why KOL over the Lazarus LCL ?
Originally I needed a small utility for a certain task I couldn't find on the internet, so after not being able to find an existing solution I decided to make the program myself. I tried AutoHotKey at first but it was not enough. I'm not good with programming languages so I searched for some constructor-like tool for creating that program, and I found a visual programming IDE called HiAsm. It lets you work directly with the code too of course but also gives you a visual interface like this:
https://imgur.com/MVoXGfPHiAsm uses KOL. At that moment I didn't know all the nuances about IDEs and the libraries, I just started working and it let me pretty much achieve everything I needed almost without interacting directly with the code. The more I was working the more I was getting inspired, and the program became more advanced than I planned originally. I almost finished the program but during finalizing its GUI design I bumped into a problem that the combobox height is fixed and I couldn't change it to what I needed. So here I am.

Anyway, I found a workaround: Place the Edit element of the desired height above the Combobox and cover the part of the Combobox that sticks out under the Edit with the Panel of the same color as the surrounding area. And use that Edit element for all the operations that were meant for the Combobox' edit box.
https://imgur.com/a/b3FqSdh