Description:
The Mid statement can be used to replace a sub-string inside a given string. 
The third parameter specifies the number of characters to be replaced. 
This parameter is ignored.

See following snippet:

Sub StringTest
	Dim MyString As String
	MyString = "This will be my text"
	Mid(MyString, 6, 7, "is")
End Sub

In the string "This will be my text", we should see that starting at the 6th position 7 characters are replaced by "is". 


Steps to Reproduce:
Open the given snippet in the macro debugger and observe the "MyString" variable before and after the "Mid" statement

Actual Results:
Only 2 characters instead of 7 are replaced: 
"This isll be my text"

Expected Results:
7 characters should be replaced by "is": 
"This is my text"


Reproducible: Always


User Profile Reset: Yes



Additional Info:
I cannot exactly tell which version was the first affected. 
I have observed the described problem in LO 6.1.3.2
The problem did not yet exist in LO 6.0.5.2