View column rendering problem with accented characters

A view column contains the following formula:

Line1:=String1;

Line2:=@Repeat(" ";10)+String2;

Line3:=@Repeat(" ";10)+String3;

Line1:Line2:Line3

With dots representing blanks, the column should show as

String1

…String2

…String3

When String3 contains a french accented character, the column is rendered as

String1

…String2

String3

The leading blanks in Line3 are ignored.

The problem does not occur when String2 contains an accented character.

We encountered this problem with 7.0.1 clients.

Everything was fine with 4.6.3 clients.

Any workaround ?