This was mine before I had them replaced:
The newer ones have nothing like that sort of light bleed , you basically can barely tell the indicators are on.
Tesla quietly started fitting improved ones about a year ago. I tried to get mine replaced under warranty but was knocked back, told that “parts are being revised all of the time, the light bleed isn’t considered a defect” etc. A few others were able to argue for free replacements.
I basically couldn’t live with the blind spot feature on at night, the light bloom was far too distracting. Now it’s perfectly useable asas intended.
The cameras (whole replacement indicators) were around £100 each, with a small labour cost to get them fitted and coded.