Make use of the Following Steps.

• Firefox Menu - Tools > Options > TAB

Make sure the following are checked

• open new windows in a new tab instead
• when i open a link in a new tab switch to it immediately

Does it work if you middle-click the link?

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).

• Do NOT click the Reset button on the Safe mode start window or otherwise make changes.

• https://support.mozilla.org/kb/Safe+Mode
• https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

i have these selected but it still doesn't work

Did you tried in safemode?

yes i just did it on safe mode and it still happens

Make use of this Addon

• https://addons.mozilla.org/en-US/firefox/addon/open-link-in-new-tab/

Thank you so much, i downloaded the add-on but i had to actually fix the options on the add-on because it was set on level 0 (to do nothing) so i had to set it to level 3. again thank you so much for taking your time to help me with my problem :)