Hi @KoBe321 ,
Do you mean that the new added Code Component could not be listed under the "Import Components" panel?
Based on the issue that you mentioned, I have made a test on my side, and don't have the issue that you mentioned. In default, the Scrollbar woud show up when the number of Code Components reach a specific value.
In addition, the Code Components within the Code tab is sorted by Modified time descending, so the new added component would be shown up at the top. You could consider click the Modified field, check if previous imported Components could show up.
Also please consider clear cache of your browser, then sign in your PowerApps again, check if the issue is fixed.
If the issue still exists, please consider submit an assisted support ticket for further help through the following link:
https://powerapps.microsoft.com/en-us/support/pro
Best regards,