Kendo Grid for Angular 2 virtual scroll -


faced virtual scrolling issue grid angular 2. grid scroll on first page , pagechangeevent not fires. can scroll down empty space. can affect pagechangeevent? how ever when scroll on top, pagechangeevent being fired fields {scroll: nan, take: undefined}. ideas?

i guess may because of dependencies? here pachage.json: 

 "dependencies": {  "@angular/animations": "^4.0.2",  "@angular/common": "^4.0.0",  "@angular/compiler": "^4.0.0",  "@angular/core": "^4.0.0",  "@angular/flex-layout": "^2.0.0-beta.7",  "@angular/forms": "^4.0.0",  "@angular/http": "^4.0.0",  "@angular/material": "^2.0.0-beta.3",  "@angular/platform-browser": "^4.0.0",  "@angular/platform-browser-dynamic": "^4.0.0",  "@angular/router": "^4.0.0",  "@ng-idle/keepalive": "^2.0.0-beta.10",  "@progress/kendo-angular-buttons": "^0.24.0",  "@progress/kendo-angular-dropdowns": "^0.38.2",  "@progress/kendo-angular-grid": "^0.26.1",  "@progress/kendo-angular-inputs": "^0.23.1",  "@progress/kendo-angular-intl": "^0.12.0",  "@progress/kendo-angular-l10n": "^0.3.0",  "@progress/kendo-data-query": "^0.5.1",  "@progress/kendo-drawing": "^0.14.0",  "@progress/kendo-theme-default": "^2.28.0",  "angular2-jwt": "^0.2.2",  "angular2-moment": "^1.3.3",  "core-js": "^2.4.1",  "loaders.css": "^0.1.2",  "lodash": "^4.17.4",  "lodash.camelcase": "^4.3.0",  "ngx-toastr": "^5.0.6",  "rxjs": "^5.1.0",  "ts-helpers": "^1.1.2",  "zone.js": "^0.8.4"},   "devdependencies": {  "@angular/cli": "1.0.0",  "@angular/compiler-cli": "^4.0.0",  "@types/jasmine": "2.5.38",  "@types/node": "~6.0.60",  "angular2-template-loader": "^0.6.2",  "awesome-typescript-loader": "^3.1.2",  "codelyzer": "~2.0.0",  "css-to-string-loader": "^0.1.2",  "exports-loader": "^0.6.4",  "extract-text-webpack-plugin": "^2.1.0",  "file-loader": "^0.11.1",  "html-loader": "^0.4.5",  "html-webpack-plugin": "^2.28.0",  "jasmine-core": "~2.5.2",  "jasmine-spec-reporter": "~3.2.0",  "karma": "~1.4.1",  "karma-chrome-launcher": "~2.0.0",  "karma-cli": "~1.0.1",  "karma-coverage-istanbul-reporter": "^0.2.0",  "karma-jasmine": "~1.1.0",  "karma-jasmine-html-reporter": "^0.2.2",  "karma-remap-istanbul": "^0.6.0",  "protractor": "~5.1.0",  "raw-loader": "^0.5.1",  "resolve-url-loader": "^2.0.2",  "rimraf": "^2.6.1",  "sass-loader": "^6.0.3",  "style-loader": "^0.16.1",  "to-string-loader": "^1.1.5",  "ts-node": "~2.0.0",  "tslint": "~4.5.0",  "typescript": "~2.2.0",  "webpack": "^2.3.3",  "webpack-dev-server": "^2.4.2",  "webpack-merge": "^4.1.0",  "xml2js": "^0.4.17"}  }

i missed [pagesize] kendo-grid parameter.


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