<seek> doesn't honour <period check="true"/>

[Veeno]

Here is a zip file which contains files seek.xml used as input for the program and seek.res containing the resulting output.

The XML file specifies <period check="true"/>, and seek.res also proclaims Full period length on line 9. However, none (!!!) of the ten multipliers in the result actually provide full period. The provided XML file specifies <method exhaust="1"/>, but the same thing happens with <method random="m"/>.

The program does have access to the yafu executable and successfully uses it when checking the period length in <lattest>.