Quarkus fails to expand quarkus.application.name in DEV mode

[Sgitario]

Describe the bug

We're using the Smallrye OpenAPI and Swagger UI extensions with the following properties:

quarkus.smallrye-openapi.path=/api/${quarkus.application.name}/internal/openapi
quarkus.swagger-ui.path=/api/${quarkus.application.name}/internal/swagger-ui

Note that "quarkus.application.name" is automatically set by the build.

When running the application using the production profile, it works fine (using the JAR file), however when running in DEV mode, it fails with:

2025-03-06 15:34:26,557 ERROR [io.qua.dep.dev.IsolatedDevModeMain] (main) Failed to start quarkus: java.lang.RuntimeException: io.quarkus.builder.BuildException: Build failure: Build failed due to errors
        [error]: Build step io.quarkus.devui.deployment.menu.EndpointsProcessor#createEndpointsPage threw an exception: java.lang.IllegalArgumentException: Specified path is an invalid URI. Path was /api/${quarkus.application.name}/internal/swagger-ui
        at io.quarkus.deployment.util.UriNormalizationUtil.toURI(UriNormalizationUtil.java:52)
        at io.quarkus.deployment.util.UriNormalizationUtil.normalizeWithBase(UriNormalizationUtil.java:107)
        at io.quarkus.vertx.http.deployment.NonApplicationRootPathBuildItem.resolvePath(NonApplicationRootPathBuildItem.java:165)
        at io.quarkus.devui.deployment.menu.EndpointsProcessor.createEndpointsPage(EndpointsProcessor.java:29)
        at java.base/java.lang.invoke.MethodHandle.invokeWithArguments(MethodHandle.java:732)
        at io.quarkus.deployment.ExtensionLoader$3.execute(ExtensionLoader.java:856)
        at io.quarkus.builder.BuildContext.run(BuildContext.java:255)
        at org.jboss.threads.ContextHandler$1.runWith(ContextHandler.java:18)
        at org.jboss.threads.EnhancedQueueExecutor$Task.doRunWith(EnhancedQueueExecutor.java:2675)
        at org.jboss.threads.EnhancedQueueExecutor$Task.run(EnhancedQueueExecutor.java:2654)
        at org.jboss.threads.EnhancedQueueExecutor.runThreadBody(EnhancedQueueExecutor.java:1627)
        at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1594)
        at java.base/java.lang.Thread.run(Thread.java:840)
        at org.jboss.threads.JBossThread.run(JBossThread.java:499)
Caused by: java.net.URISyntaxException: Illegal character in path at index 6: /api/${quarkus.application.name}/internal/swagger-ui
        at java.base/java.net.URI$Parser.fail(URI.java:2976)

This was working fine in Quarkus 3.18.3, and we spotted the issue in 3.19.2.

We're using Gradle (didn't check if this is happening in Maven), and also if it only affects to the swagger UI extension.

Expected behavior

No response

Actual behavior

No response

How to Reproduce?

No response

Output of uname -a or ver

No response

Output of java -version

No response

Quarkus version or git rev

No response

Build tool (ie. output of mvnw --version or gradlew --version)

No response

Additional information

No response

[Sgitario]

@radcortez do you know any recent changes that could affect this?

[Sgitario]

I found the changes that are causing this issue: #43950
@phillip-kruger the getProperty method does not expand the properties.

This only affects the swagger UI endpoint and it can be reproduced in Maven as well.