filters and custom field by project

[mt_s01]

Hello,

From the "All bugs" page, I use the filter with several custom fields which belong to different projects.
For example, I have the custom field "custom_field_1" linked to "PROJECT 1". When I set the filter on the "custom_field_1" at "none", MANTIS displays all bugs from PROJECT A where "custom_field_1" is null but it displays all bug from PROJECT B where the custom field is not present too.

Is this a bug ?

Thanks for help.

[mt_s01]

up !