Try different solvers. Only Cassowary and Sutherland work with all the default constraints. The console below indicates problems with the constraints.

Notice the differences between solvers. For example, Cassowary will not let you violate the constraints when rotating the blue box. Sutherland's relaxation will let you do it, but correct it when you touch something else. DeltaBlue can only deal with equalities with explicit propagation functions.

Mind that some of these solvers are heavily under development and may not work at all. YMMV.

Cassowary (Simplex) Sutherland's Relaxation algorithm Z3 (Emscripten-compiled SMT solver) DeltaBlue (local propagation) a simple CSP solver Backtalk (a faster CSP solver)

Console