Angular 21 assertion error injectorIndex should point to a bloom filter when using interpolation bindings on Kendo Angular Grid inputs #66101
Description
Which @angular/* package(s) are the source of the bug?
core
Is this a regression?
Yes
Description
After an upgrade to Angular 21, template syntax that worked in earlier versions now triggers an ASSERTION ERROR: LContainer must be defined.
The issue appears when interpolation syntax is used on component input bindings in the Kendo Angular Grid.
Example that previously worked in Angular 20:
<kendo-grid [kendoGridBinding]="data">
<kendo-grid-column field="{{ 'date' }}" title="{{ 'Date' }}"></kendo-grid-column>
</kendo-grid>The above will not work in Angular 21 unless optimization is set to true.
This will also work in Angular 21, but if you add a second Grid it will throw the error:
<kendo-grid [kendoGridBinding]="data">
<kendo-grid-column title="{{ 'bar' }}" field="{{ 'name' }}"></kendo-grid-column>
</kendo-grid>If build optimization is enabled in the angular.json, the error will not be thrown.
Example where the error is reproduced and additional information in comment form:
grid-angular21.zip
Please provide the exception or error you saw
ERROR Error: ASSERTION ERROR: injectorIndex should point to a bloom filter [Expected=> number === string <=Actual]
at throwError2 (_untracked-chunk.mjs:225:9)
at assertNumber (_untracked-chunk.mjs:156:5)
at assertNodeInjector (_untracked-chunk.mjs:1616:3)
at lookupTokenUsingNodeInjector (_debug_node-chunk.mjs:926:20)
at getOrCreateInjectable (_debug_node-chunk.mjs:878:19)
at ɵɵdirectiveInject (_debug_node-chunk.mjs:7456:17)
at NodeInjectorFactory.ListComponent_Factory [as factory] (progress-kendo-angular-grid.mjs:35536:102)
at getNodeInjectable (_debug_node-chunk.mjs:1013:38)
at instantiateAllDirectives (_debug_node-chunk.mjs:4923:23)
at createDirectivesInstances (_debug_node-chunk.mjs:4782:3)
<img width="960" height="177" alt="Image" src="https://github.com/user-attachments/assets/4b681abf-934f-461b-a634-b89d273c6913" />
Please provide the environment you discovered this bug in (run ng version)
Angular CLI : 21.0.0
Angular : 21.0.0
Node.js : 22.12.0
Package Manager : npm 11.1.0
Operating System : darwin arm64
┌───────────────────────────┬───────────────────┬───────────────────┐
│ Package │ Installed Version │ Requested Version │
├───────────────────────────┼───────────────────┼───────────────────┤
│ @angular/build │ 21.0.0 │ ^21.0.0 │
│ @angular/cli │ 21.0.0 │ ^21.0.0 │
│ @angular/common │ 21.0.0 │ ^21.0.0 │
│ @angular/compiler │ 21.0.0 │ ^21.0.0 │
│ @angular/compiler-cli │ 21.0.0 │ ^21.0.0 │
│ @angular/core │ 21.0.0 │ ^21.0.0 │
│ @angular/forms │ 21.0.0 │ ^21.0.0 │
│ @angular/localize │ 21.0.0 │ ^21.0.0 │
│ @angular/platform-browser │ 21.0.0 │ ^21.0.0 │
│ @angular/router │ 21.0.0 │ ^21.0.0 │
│ rxjs │ 7.8.2 │ ~7.8.0 │
│ typescript │ 5.9.3 │ ~5.9.2 │
│ vitest │ 4.0.14 │ ^4.0.8