Can't access property "coArr", options is undefined

[mreiche]

When reloading an mdui (2.1.4) app with a textfield in webpack-dev-server, I always get the following error:

can't access property "coArr", options is undefined
unobserve/<@webpack-internal:///./node_modules/@mdui/shared/helpers/observeResize.js:27:31
_$_js__WEBPACK_IMPORTED_MODULE_0__.$.fn.each/<@webpack-internal:///./node_modules/@mdui/jq/methods/each.js:9:25
eachArray@webpack-internal:///./node_modules/@mdui/jq/shared/helper.js:124:22
_$_js__WEBPACK_IMPORTED_MODULE_0__.$.fn.each@webpack-internal:///./node_modules/@mdui/jq/methods/each.js:8:72
unobserve@webpack-internal:///./node_modules/@mdui/shared/helpers/observeResize.js:25:21
disconnectedCallback@webpack-internal:///./node_modules/mdui/components/text-field/index.js:323:38
...

May be a regression of #341