--- cool-retro-term-1.2.0/app/qml/TerminalFrame.qml.orig	2023-01-10 21:10:25.602370191 +0100
+++ cool-retro-term-1.2.0/app/qml/TerminalFrame.qml	2023-01-10 21:11:08.633996715 +0100
@@ -87,7 +87,7 @@
             float alpha = 0.0;
 
             float frameShadow = max2(positiveLog(-coords * frameShadowCoeff + vec2(1.0)) + positiveLog(coords * frameShadowCoeff - (vec2(frameShadowCoeff) - vec2(1.0))));
-            frameShadow = max(sqrt(frameShadow), 0.0);
+            frameShadow = clamp(sqrt(frameShadow), 0.0,1.0);
             color *= frameShadow;
             alpha = sum2(1.0 - step(vec2(0.0), coords) + step(vec2(1.0), coords));
             alpha = clamp(alpha, 0.0, 1.0);