controlsfx | High quality UI controls to complement the core JavaFX

This is the background for my question:

I have a GUI with an accordion with many TitledPanes, and each Titledpane contains a spreadsheetView from the controlsFX package. There is a search-function in the code, where a Titledpane is opened and a specific cell in the spreadsheetView is opened for text input using the edit method of the spreadsheetcell type.

If the TitledPane is already open, this works fine, but if it must open first then the call of the edit-method fails. (The program is actually written in scalafx, but I don't think that matters here because scalafx is just a wrapper of javaFX and calls all the javaFX methods.) Someone from the scalafx user group found out, that when I put in a wait time of 350ms (The animation time of the TitledPane is 300ms) then the call of 'edit' on the cell succeeds. He thought that the call fails, when the rendering of the content of the TitledPane is not complete. This is also true when I turn the animation for the TitledPane off. In this case, it is sufficient to wait for 50ms, which does not work when animation is on.

Anyway - I am concerned about just waiting 350ms and hoping that this will always work. Which brings me back to the question: How can I tell that the rendering inside the TitledPane (or the spreadsheetView?) is complete so that I can safely call my edit method on the spreadsheetView?

MY SETUP:

I followed the steps for the JavaFX and IntelliJ -> Modular from IDE path.

I added the ikonli-core-12.2.0.jar, ikonli-javafx-12.2.0.jar and ikonli-carbonicons-pack-12.2.0.jar via the repository to the Scene Builder in this order. Here, they work fine.

Then I added those same .jars in that same order to the IntelliJ as described here: Correct way to add external jars (lib/*.jar) to an IntelliJ IDEA project.

My module-info.java file contains the following code:

Controller class

I have developed a simple JavaFX app using jgit, that is allowing users to play with git.

When the app was started from the IntelliJ idea, I was able to clone the GitHub repo using my jgit implementation of the "git clone" command without any issues. But as soon as I created an image from my app and started the app from the image, I am getting an SSL certificate issue:

Exception:org.eclipse.jgit.api.errors.TransportException: Secure connection to https://my-github-repo.git could not be established because of SSL problems.

I am trying to understand why I am getting the SSL certificate issue only when I am running the app from the image. Can somebody explain that? I understand that I can disable SSL verification (there are some questions answered on that topic), but I want to know why it is working from IDE and not from the created image...

here is my simplified git clone implementation for http:

I am trying to both run and jlink a project that uses Gradle, Spring, and JavaFX. In my first attempt, I had been able to configure some simple files for my project that allow me to run it, but not jlink it. For my more recent attempt, I used this project as a template to tinker with. The result allows me to jlink but not run. I suspect what I have to do to get it to work is to transfer settings from the jlink task to the run task. I am guessing that the way to do this is to use the application plugin, though I don't know what settings need to be set, or what the syntax is for writing them.

I am trying to make a sign up page
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