Navigation keys are not working properly when switch from any application to mozilla-firefox

[logon2manish]

Binary package hint: mozilla-firefox

steps to reproduce -
1. open a acrobat reader file which is in local system in mozilla-firefox.
2. click inside anywhere in file. Use navigation keys to scroll up and down. keys working fine.
3. Use Alt+Tab button to select another application running on system. ( e.g. word application or any)
4. Now again use Alt+Tab button on keys to select same pdf reader in Mozilla-Firefox application

Now use navigation keys to scroll up and down.
Navigation keys are not working.

[Micah Gersten (micahg)]

Thank you for reporting this issue to Ubuntu. What version of Firefox are you running? Which PDF plugin are you using?

[drew212 (mstngdrew212)]

Hello, thanks for reporing this issue to help improve Ubuntu. This bug is likely a duplicate of bug #292474. Could you please post your version of Ubuntu and your version of firefox?

[Monkey (monkey-libre)]

We are closing this bug report because it lacks the information we need to investigate the problem, as described in the previous comments. Please reopen it if you can give us the missing information, and don't hesitate to submit bug reports in the future. To reopen the bug report you can click on the current status, under the Status column, and change the Status back to "New". Thanks again!