firefox startup delay with lastPass plugin solved

[Bertus]

I use firefox with the lastPass plugin. With recent versions of firefox and lastPass I noticed a delay when starting firefox sandboxed.
The delay was less noticable when firefox, with the lastPass plugin, was started unsandboxed.
To solve this delay I added a local read only template to my firefox sandbox. This template starts firefox without extra delay when sandboxed.

system:
- Firefox 47.0.1 (32bit)
- LastPass plugin 4.1.25a
- Windows 8.1 64 bit

Local template:
[Template_Local_Firefox_Lastpass_ReadOnlyAccess]
ReadFilePath=firefox.exe,%Tmpl.Firefox%\extensions\support@lastpass.com\*
Tmpl.Title=Template_Local_Firefox_Lastpass_ReadOnlyAccess
Tmpl.Class=Local

Are there any security risks to consider with this template ?