Non admin user is able to see other employees timesheet lines
I've just found that an employee without any access group is able to see other employees lines. It should not see them as there is an access rule that prevents it [1]
The issue is reproducible on latest trunk.
I've market it as security issue as the user is able to by pass and access records that he sould not be able to see (or write). I do not think it's a big issue for timesheet lines but I may be an issue for other custom rules.
[1] https://hg.tryton.org/modules/timesheet/file/ee4b51fe0754/line.xml#l60