pdf-file not downloadable[BUG]

Checks

• I have read the FAQ section, searched the open issues, and still think this is a new bug.

Describe the bug you encountered:

I have been using your app for a very long time and have not noticed any weaknesses so far. It's actually a very good app.
On vacation, however, I wanted to look at an important pdf file that is stored in the database.
Unfortunately, this was not possible.
All 3 options offered to me in the app do not work.
I receive a file as a download with the Android browser that cannot be read by Word, for example, although I can read all the other pdf files that I have saved elsewhere.

Then I tried to save the file to Dropbox.
Problem: I didn't want to log in with Google, but with my own access data. But this is not possible, because at that moment I can no longer access the database with your app. Writing down the password beforehand is not a solution for me, as I often use 60-digit passwords.
The only solution would be for me to be able to open a second instance of your app.

Describe what you expected to happen:

1. Easy download of pdf files stored in Keepass.
2. Possibility of using a second instance of your program

What version of Keepass2Android are you using?

1.10-pre

Which version of Android are you on?

Androidversion 14

Start by reproducing the three PDF handling options on Android 14 with Keepass2Android 1.10-pre, checking whether the downloaded file can be opened. Also assess the separate request for a second app instance and determine whether these should be split into distinct issues. Done requires clearly verified behavior for each requested outcome.