invisible objects ...

hi, any idea why objects are in scene but are not visible anymore, they have no transparent material, ! they cannot be hidden with the “eye” symbol ! ?

where are they? in attachment i have a file with 2 missing objects

thanks for help!

r-test.tm (3.1 MB)

here a small film of the situation. 2 wooden squared timber missing. not possible to hide , i clicked them !! …where are the objects ?