I run with MESA_GL_VERSION_OVERRIDE=4.2  MESA_GLSL_VERSION_OVERRIDE=420 and
receive call stack:

(0) /usr/lib/libpthread.so.0 : +0x10d60 [0x7f360f099d60]
(1) ./libOGLBinding.so : api::OpenGLRenderer::ApplyConstants()+0x65
[0x7f360ffd57d5]
(2) ./libRenderFramework.so : rf::Renderer::Apply(bool)+0x57 [0x7f360fc74207]
(3) ./EoCApp : ig::IggyBinding::Swap(rf::Renderer*)+0xfc [0xebf16c]
(4) ./libGameEngine.so : BaseApp::EndDrawGUI(rf::Renderer*)+0x9b
[0x7f360fdd288b]
(5) ./libGameEngine.so : BaseApp::MakeFrame()+0x3a4 [0x7f360fdd2db4]
(6) ./libGameEngine.so : BaseApp::OnIdle()+0xe0 [0x7f360fdd1590]
(7) ./EoCApp : main+0x170 [0x6d4430]
(8) /usr/lib/libc.so.6 : __libc_start_main+0xf0 [0x7f360ed01610]
(9) ./EoCApp : _start+0x29 [0x6d41a9]