This project does not show forms. Just the units. In your screenshot I see it has a Forms tree but it is showing units... if you double click those will it display the form in Form Editor? Are you doing anything special to have that? I don't have a Forms tree item on neither my Windows installs or Linux installs.
ok i give up! no idea why the forum is shrinking my lazarus version to a tiny font. just tried editing the post and each time it shrinks the version of lazarus to the tiny font you see below.
I will revisit this later tonight.
This is my current version on this computer. Pretty recent.
Lazarus 2.3.0 (rev main-2_3-2420-gb40a90e429) FPC 3.3.1 x86_64-win64-win32/win64f
Lazarus 2.3.0 (rev main-2_3-2420-gb40a90e429) FPC 3.3.1 x86_64-win64-win32/win64