Following a database restore (pg_restore) our pdf's no longer format correctly except when one is in Debug mode.  In debug mode the formatting is fine.

The problem sounds similar to what many others have experienced but the fixes they suggest do not work for me.

Here's what I have tried:

1. Changing the setting of web.base.url to each of the following values in turn: http://127.0.0.1:8069 ; http://0.0.0.0:8069 ; localhost:8069 ; http://10.10.10.123:8069 (the ip address of our odoo server)

2. Adding a parameter web.base.url.freeze set to True

3. Adding a parameter report.url set to each of the same values as listed above in (1)

4. Many combinations of the above with and without the extra parameters - makes no difference.

Odoo v 9.0 Community installed on Ubuntu 16.04.3 LTS running on a virtual machine under XenServer host.   Configuration running successfully in production for over 12 months.

Odoo log file gives no clues even when running at debug log level.  The print-outs do not format correctly in HTML mode either.

Does anyone have any ideas: (a) how to fix this; or (b) how to troubleshoot; or (c) what *might* be wrong; or (d) the mechanics of how the above parameters work; or (e) what going into debug mode does exactly .. that could have any kind of impact upon this?