My Skin Does Not Appear on Servers, While Other Players' Skins Are Visible

I am experiencing an issue with Minecraft Bedrock Edition 26.44 on Windows.

In single-player, my skin displays correctly. However, when I join any server or another player's world, the following happens: my own skin is replaced with the default Steve/Alex skin. I cannot see my actual skin in third-person view, and other players also see me as Steve/Alex.

At the same time, I can see other players' skins normally, so as far as I understand, this is not a general issue with custom skins being blocked.

I have tested several different options:

• A custom PNG skin;
• An official skin from the Dressing Room;
• My own world with multiplayer enabled;
• Different multiplayer servers.

The result is always the same: my skin works correctly in single-player, but my own skin does not appear in multiplayer.

I have also checked the "Only Allow Trusted Skins" setting.

I also tried importing my skin as a .mcpack, but this did not make any difference. Official skins also do not appear correctly in multiplayer.

Could you please help me determine what might be causing this specific issue and whether there is a way to fix it without completely reinstalling Minecraft? Could it be related to the game cache, my Microsoft/Xbox account, Bedrock settings, or a specific bug in version 26.44?

I would greatly appreciate any specific troubleshooting steps or solutions.