Selecting File Drop for an external email based recipient defaults to custom permissions - solved

AIO v9.6.0
Nextcloud Hub 8, 29.0.7

As the title says, when we go to share a folder and add an email address or external recipient to the box and it drops down what permissions to use and we select file drop,. but when you actually click save share it will actually have added it with custom permissions, Read/Create/Share. This is fairly trivial to change back but the main problem we have is that the email will have already been sent and there is a small window where that recipient of the email will be able to access the whole share and an even larger window if the user forgets to re change the permissions. Is this normal behaviour or are we missing some checkbox somewhere? Or is it a known bug?

Thanks
James

File request in v30 seems to fix this, so sorted

Thanks
James