Hi Guys,
Just realized that i had a problem using Lavender theme (theme that i really like:) )
Indeed as you can see on the picture when we try to go through the option post where i expected to find option such as delete post, nothing appear.
I tried to look for previous post about this subject on the forum but unfortunately find nothing 
Thanks in advance!
Most likely lavender/vanilla is out of date. Try updating it to a newer version.
Feel pretty stupid now.. lol.
I wasn't expecting that upgrading Vanilla would have fix Lavender ^^.
Thanks @baris !
Yeah lavender is based on the vanilla theme, it overrides a few templates but everything else it uses from vanilla.
@baris
Actually there is still something wrong...
Whenever i click on delete post, the entire screen become gray, even the confirmation box :
Just like something else is coming in foreground. Impossible then to confirm.
Actually when i press enter it's working, but not user friendly as you can imagine...
Actually nothing works neither when i click on any option in topic tools
(No reaction when i select Delete , move, pin, topic even if i ticked some topic)
@Dim I wish I had better news for you... but I had the same problem a week back. Tried everything. Had to do a New Install from scratch.
Rich
Concerning the grey layer over the page, i found couple of answers on the forum, seems like this was a problem in past versions.
Added this to the custom css
".modal-backdrop {
z-index: 0;
} "
it made the trick
However nothing concerning post management 
@Dim said:
".modal-backdrop {
z-index: 0;
} "
.modal-backdrop { z-index: auto; }
Would probably be preferable, since auto makes it behave like no z-index property has been specified (as is the case in the default Bootstrap theme used in lavender and persona) which makes the element inherit the z-index of its parent, whereas z-index: 0 forces the z-index to be, well, 0.
