[igorius]

I have some series where the series-numbers in calibre are like this:
1
2
2.1
2.2
3
3.5
4

Pocketbook stores this numbers as integer:
1
2
2
2
3
3
4

which is obviously completely wrong! I tried setting this numbers correct inside the explorer-3.db and the numbers are shown correct in the PB Library. So its not a problem of the PB-db.
Is it a kind of firmware-bug? Whatever plugin i use, the series-numbers never get stored correctly.
Does any other person have the same problem? Is there any way to get that thing working the correct way?
Thanks!