Change:
.vs-dark .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon { background-image: url('symbol-sprite.svg'); background-repeat: no-repeat; <ins> background-position: -2px -22px; </ins> } <ins> .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon, </ins> .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon.method, .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon.function, <del> .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon.constructor		{ background-position: 0 -4px; } </del> <ins> .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon.constructor		{ background-position: -2px -2px; } </ins> .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon.field, <del> .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon.variable 			{ background-position: -22px -4px; } .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon.class 				{ background-position: -43px -3px; } .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon.interface 			{ background-position: -63px -4px; } .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon.module 			{ background-position: -82px -4px; } .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon.property 			{ background-position: -102px -3px; } .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon.enum		 		{ background-position: -122px -3px; } .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon.rule		 		{ background-position: -242px -4px; } .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon.file		 		{ background-position: -262px -4px; } </del> <ins> .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon.variable 			{ background-position: -22px -2px; } .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon.class 				{ background-position: -42px -2px; } .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon.interface 			{ background-position: -62px -2px; } .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon.module 			{ background-position: -82px -2px; } .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon.property 			{ background-position: -102px -2px; } .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon.enum		 		{ background-position: -122px -2px; } .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon.string		 		{ background-position: -202px -2px; } .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon.rule		 		{ background-position: -242px -2px; } .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon.file		 		{ background-position: -262px -2px; } </ins> .vs-dark .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon.method, .vs-dark .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon.function, <del> .vs-dark .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon.constructor 	{ background-position: 0 -24px; } </del> <ins> .vs-dark .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon.constructor 	{ background-position: -2px -22px; } </ins> .vs-dark .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon.field, <del> .vs-dark .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon.variable 		{ background-position: -22px -24px; } .vs-dark .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon.class 		{ background-position: -43px -23px; } .vs-dark .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon.interface 	{ background-position: -63px -24px; } .vs-dark .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon.module 		{ background-position: -82px -24px; } .vs-dark .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon.property 		{ background-position: -102px -23px; } .vs-dark .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon.enum		 	{ background-position: -122px -23px; } .vs-dark .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon.rule		 	{ background-position: -242px -24px; } .vs-dark .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon.file		 	{ background-position: -262px -24px; } </del> <ins> .vs-dark .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon.variable 		{ background-position: -22px -22px; } .vs-dark .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon.class 		{ background-position: -43px -22px; } .vs-dark .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon.interface 	{ background-position: -63px -22px; } .vs-dark .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon.module 		{ background-position: -82px -22px; } .vs-dark .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon.property 		{ background-position: -102px -22px; } .vs-dark .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon.enum		 	{ background-position: -122px -22px; } .vs-dark .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon.string		 	{ background-position: -202px -22px; } .vs-dark .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon.rule		 	{ background-position: -242px -22px; } .vs-dark .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon.file		 	{ background-position: -262px -22px; } </ins> .hc-black .monaco-quick-open-widget .quick-open-tree .quick-open-entry .quick-open-entry-icon { background: none;

Discussion:
Refs: <img width="323" alt="image" src="https://user-"For the monaco standalone editor we use svg sprites + a few inline base64 images. Since we updated our outline icons with , we'll need to update these as well. cc