Using UI textues authored in Gamma space in Linear mode

I'm having the exact same issue. UI looks the way it way it does in photoshop if I use Gamma color space and the 3D world looks much better in Linear color space. Is there a way we can make the UI appear like it does in Gamma after we switch to Linear?

I have exactly the same issue : Nobody knows how to author UI texture for the linear space ?

I solved this by writing ui shader with _Gamma property, and apply this to the sampled color alpha only(!):

 Shader "UI/Alpha blend gamma"
 {
     Properties
     {
         _MainTex ("Texture", 2D) = "white" {}
         _Gamma ("Gamma", Range(1, 2.2)) = 2.2
         _Color ("Tint", Color) = (1,1,1,1)
          
         _StencilComp ("Stencil Comparison", Float) = 8
         _Stencil ("Stencil ID", Float) = 0
         _StencilOp ("Stencil Operation", Float) = 0
         _StencilWriteMask ("Stencil Write Mask", Float) = 255
         _StencilReadMask ("Stencil Read Mask", Float) = 255
  
         _ColorMask ("Color Mask", Float) = 15
     }
     SubShader
     {
         Tags
         {
             "Queue"="Transparent" 
             "IgnoreProjector"="True" 
             "RenderType"="Transparent" 
             "PreviewType"="Plane"
             "CanUseSpriteAtlas"="True"
         }
 
         Stencil
         {
             Ref [_Stencil]
             Comp [_StencilComp]
             Pass [_StencilOp] 
             ReadMask [_StencilReadMask]
             WriteMask [_StencilWriteMask]
         }
 
         Cull Off
         Lighting Off
         ZWrite Off
         ZTest Off
         Blend SrcAlpha OneMinusSrcAlpha
         ColorMask [_ColorMask]
 
         LOD 100
 
         Pass
         {
             CGPROGRAM
             #pragma vertex vert
             #pragma fragment frag
             
             #include "UnityCG.cginc"
 
             struct appdata
             {
                 float4 vertex : POSITION;
                 float4 color : COLOR;
                 float2 uv : TEXCOORD0;
             };
 
             struct v2f
             {
                 half2 uv : TEXCOORD0;
                 fixed4 color : COLOR;
                 float4 vertex : SV_POSITION;
             };
 
             sampler2D _MainTex;
             float4 _MainTex_ST;
             
             v2f vert (appdata v)
             {
                 v2f o;
                 o.vertex = UnityObjectToClipPos(v.vertex);
                 o.color = v.color;
                 o.uv = TRANSFORM_TEX(v.uv, _MainTex);
                 return o;
             }
 
             fixed4 _Color;
             float _Gamma;
             
             fixed4 frag (v2f i) : SV_Target
             {
                 fixed4 col = tex2D(_MainTex, i.uv) * i.color;
                 col.a = pow(col.a, _Gamma);
                 return col * _Color;
             }
             ENDCG
         }
     }
 }