SPKorhonen
commented
3 days ago I think I've encountered the same problem in 17.18.x
I think I've isolated the problem into onScrollPositionChange.
- When it is called for the first time the target.scrollTop gives a reasonable value.
- However, if delay is enabled it is called a second time from inside of this.scrollTimeout via this.onScrollChange.
- In this invocation target always returns target.scrollTop == 0 which causes all kinds of problems
- Unfortunately, I haven't found a definitive reason for the behaviour
- If I disable the delay scroller works.
- I've also tried caching the result of first invocation and using it in this.onScrollChange which also works
Describe the bug
Can be reproduce on the demo page of p-scroller https://primeng.org/scroller#lazy-load
Go on the lazy list, scroll down then scroll up to the previous location before the call resolve (the delay parameter 250 in the example)
You are stuck in a infinite loading :
Environment
Bug is present on local (16.9.1) and in the stackblitz provided on the primeng doc aswell ( "primeng": "17.18.9")
Reproducer
https://stackblitz.com/edit/b43ssr-rbmhom?file=package.json
Angular version
17
PrimeNG version
17
Build / Runtime
Angular CLI App
Language
TypeScript
Node version (for AoT issues node --version)
16
Browser(s)
No response
Steps to reproduce the behavior
cf introduction
Expected behavior
It should not display the loader but the data