Greets,
I'm the developer / maintainer of FQL. An issue was opened regarding CSS specificity issue when JTCS is enabled. It is due to CSS in JCTS that is too generic. I see there are several other issues open / raised with other clashes with modules with this package. The particular conflicting CSS rule in JCTS is .square in _utility.scss#L642-645. In taking a quick gander at the CSS for this module there likely will be any number of CSS conflicts with other FVTT packages including game systems. I recommend improving the specificity when you can as conflicts will occur.
Example results when JCTS is enabled where .square throws off the layout of FQL:

The correct layout when JCTS .square is disabled:

Greets,
I'm the developer / maintainer of FQL. An issue was opened regarding CSS specificity issue when JTCS is enabled. It is due to CSS in JCTS that is too generic. I see there are several other issues open / raised with other clashes with modules with this package. The particular conflicting CSS rule in JCTS is
.squarein _utility.scss#L642-645. In taking a quick gander at the CSS for this module there likely will be any number of CSS conflicts with other FVTT packages including game systems. I recommend improving the specificity when you can as conflicts will occur.Example results when JCTS is enabled where

.squarethrows off the layout of FQL:The correct layout when JCTS

.squareis disabled: