Input number caret issue with negatives

[AdrienHallet]

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[x] bug report => Search github for a similar issue or PR before submitting
[ ] feature request => Please check if request is not on the roadmap already https://github.com/primefaces/primeng/wiki/Roadmap
[ ] support request => Please do not submit support request here, instead see http://forum.primefaces.org/viewforum.php?f=35

Plunkr Case (Bug Reports)
The showcase itself can demonstrate the bug

Current behavior
Negative input skips to end of line after first number, even after the suffix, preventing usage of the field until caret is positioned again.

Expected behavior
Same as the positive input

Minimal reproduction of the problem with instructions

1. Focus on number input
2. Input '-' sign
3. Input any number