BO interface acting up

[Foxfur]

I did a new install of PrestasShop 1.7.6.3 on a local apache server (xampp) running php version 7.4.8

I noticed when I try to create a new product, the fields and information isn't displayed correctly. The first tab looks somewhat ok except all the values in the dropdowns are shown and the dropdown doesn't work. On the additional tabs or scrolling down the page the fields show up in a messed up order, sitting beyond the display area so they're inaccessible too. 

I've tried browsing in different browsers, same issue. I've tried clearing the cache with no luck. Deleting the content of folders cache/smarty/cache and cache/smarty/compile also no luck. And due to the dropdown issue I can't change any settings from the backoffice. 

Anyone encountered this before or have any clue what to do? 

Thank you very much for your help. This issue keeps me from getting any further with my shop so I hope you can help me.

[Janett]

[Foxfur]

14 hours ago, Janett said:

Oooh this is highly useful! Thank you so much for sharing!! I'll go research that!!

[Foxfur]

20 hours ago, Janett said:

Update: 

I installed php version 7.3 and now everything appears to be working like a charm. Thank you so much for your quick response. It fixed the problem for me!!

[Janett]

17 hours ago, Foxfur said:

I installed php version 7.3

You should use PHP 7.2, 7.3 is for PrestaShop 1.7.7.0 and this version is not released yet...

[Foxfur]

So far it seems to work okay. I have other projects that aren't compatible with php versions lower than 7.3 so I prefer not to go lower. This will be my go-to solution if I experience more problems.