Created attachment 68805 [details]
Test data to reproduce the Errors

Terms: 
- Autofilter (AF)
- Standard Filter (SF)

Please do the following:

* load Test.ODS:

Zeile	Wert_1	Wert_2
1	1	a
2	1	b
3	1	c
4	2	a
5	2	b
6	2	c
7	3	a
8	3	b
9	3	c
10	4	a
11	4	b
12	4	c

* click Wert_1 / AF ; unmark [3] and [4] ; click <ok>

Zeile	Wert_1	Wert_2
1	1	a
2	1	b
3	1	c
4	2	a
5	2	b
6	2	c
(this is ok)

* click Wert_1 / AF ; click <Standard Filter ...> and look at the creteria:
   Wert_1 = 1
only the first creteria from AF is passed to SF 

It should read:
   Wert_1 = 1
OR Wert_1 = 2

the second line is missing ;

  click <Cancel>

Zeile	Wert_1	Wert_2
1	1	a
2	1	b
3	1	c
4	2	a
5	2	b
6	2	c

* click Wert_2 / AF ; unmark [a] ; click <ok>

Zeile	Wert_1	Wert_2
2	1	b
3	1	c
5	2	b
6	2	c
(this is ok)

* click Wert_2 / AF ; click <Standard Filter ...> and look at the creteria:
    Wert_1 = 1
AND Wert_2 = b

only the first AF-creteria from each column is passed to SF
OR-Creteria and brackets!!! are not considered about.
So this should read without brackets

    Wert_1 = 1
AND Wert_2 = b
OR  Wert_1 = 1
AND Wert_2 = c
OR  Wert_1 = 2
AND Wert_2 = b
OR  Wert_1 = 2
AND Wert_2 = c

[maybe somebody can think about introducing brackets, then we would get:
(Wert_1 = 1 OR Wert_1 = 2) AND (Wert_2 = b OR Wert_2 = c)   ] 

 add missing lines to SF ; click <ok>

Zeile	Wert_1	Wert_2
2	1	b
3	1	c
5	2	b
6	2	c
(this is ok)

* click Wert_1 / AF and look at the checkboxes
only [1] is checked ; 2 is missing!!

  click <ok> 

Zeile	Wert_1	Wert_2
2	1	b
3	1	c
5	2	b
6	2	c
(this is wrong!)

Either [2] should be checked or this should read:

Zeile	Wert_1	Wert_2
2	1	b
3	1	c

* click Wert_2 / AF and look at the checkboxes
only [b] is checked ; c is missing!!
the same like above-

--- end of test ---

please check filter syntax
thank you!