Error: unknown text editor

[Error telemetry](https://vscode-errors.azurewebsites.net/card?ch=92d25e35d9bf1a6b16f7d0758f25d48ace11e5b9&bH=02e2541e-c21a-5fb6-e5da-d9ba143cb4aa): ``` Error: unknown text editor [at S.$acceptEditorPropertiesChanged in src/vs/workbench/api/common/extHostTextEditors.ts:104:10](https://vscode.dev/github/microsoft/vscode/blob/92d25e35d9bf1a6b16f7d0758f25d48ace11e5b9/src/vs/workbench/api/common/extHostTextEditors.ts#L104:10) [at s._doInvokeHandler in src/vs/workbench/services/extensions/common/rpcProtocol.ts:455:17](https://vscode.dev/github/microsoft/vscode/blob/92d25e35d9bf1a6b16f7d0758f25d48ace11e5b9/src/vs/workbench/services/extensions/common/rpcProtocol.ts#L455:17) [at s._invokeHandler in src/vs/workbench/services/extensions/common/rpcProtocol.ts:440:32](https://vscode.dev/github/microsoft/vscode/blob/92d25e35d9bf1a6b16f7d0758f25d48ace11e5b9/src/vs/workbench/services/extensions/common/rpcProtocol.ts#L440:32) [at s._receiveRequest in src/vs/workbench/services/extensions/common/rpcProtocol.ts:370:19](https://vscode.dev/github/microsoft/vscode/blob/92d25e35d9bf1a6b16f7d0758f25d48ace11e5b9/src/vs/workbench/services/extensions/common/rpcProtocol.ts#L370:19) [at s._receiveOneMessage in src/vs/workbench/services/extensions/common/rpcProtocol.ts:296:10](https://vscode.dev/github/microsoft/vscode/blob/92d25e35d9bf1a6b16f7d0758f25d48ace11e5b9/src/vs/workbench/services/extensions/common/rpcProtocol.ts#L296:10) [at <anonymous> in src/vs/workbench/services/extensions/common/rpcProtocol.ts:161:42](https://vscode.dev/github/microsoft/vscode/blob/92d25e35d9bf1a6b16f7d0758f25d48ace11e5b9/src/vs/workbench/services/extensions/common/rpcProtocol.ts#L161:42) [at b.invoke in src/vs/base/common/event.ts:572:17](https://vscode.dev/github/microsoft/vscode/blob/92d25e35d9bf1a6b16f7d0758f25d48ace11e5b9/src/vs/base/common/event.ts#L572:17) [at v.deliver in src/vs/base/common/event.ts:774:22](https://vscode.dev/github/microsoft/vscode/blob/92d25e35d9bf1a6b16f7d0758f25d48ace11e5b9/src/vs/base/…