diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index cb2766d3..2649c3ba 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,5 +1,5 @@
 .apk-add: &apk-add
-- "apk add go-task diffutils"
+- "apk add go-task diffutils gitlab_ci_log_section"
 .disable-hainish: &disable-hainish
 - "rm -f .env.development"
 .cache-ruby: &cache-ruby
@@ -30,13 +30,18 @@ assets:
   - *cache-node
   - *cache-task
   before_script:
+  - "gitlab_ci_log_section --name git --header=\"Configuring git\""
   - "git config --global user.email \"${GIT_USER_EMAIL:-$GITLAB_USER_EMAIL}\""
   - "git config --global user.name \"${GIT_USER_NAME:-$GITLAB_USER_NAME}\""
   - "git remote set-url --push origin \"https://${GITLAB_USERNAME}:${GITLAB_TOKEN}@${CI_SERVER_HOST}/${CI_PROJECT_PATH}.git\""
+  - "gitlab_ci_log_section --name git --end"
+  - "gitlab_ci_log_section --name apk --header=\"Installing dependencies\""
   - "apk add brotli"
   - *apk-add
   - *disable-hainish
+  - "gitlab_ci_log_section --name apk --end"
   script:
+  - "gitlab_ci_log_section --name assets --header=\"Building\""
   - "go-task assets"
   after_script:
   - "git add public && git commit -m \"ci: assets [skip ci]\""
diff --git a/app/controllers/active_storage/direct_uploads_controller_decorator.rb b/app/controllers/active_storage/direct_uploads_controller_decorator.rb
index c62dae2a..94070882 100644
--- a/app/controllers/active_storage/direct_uploads_controller_decorator.rb
+++ b/app/controllers/active_storage/direct_uploads_controller_decorator.rb
@@ -18,8 +18,9 @@ module ActiveStorage
       # para que puedan propagarse correctamente a través de todo el
       # stack.
       def blob_args
-        params.require(:blob).permit(:filename, :byte_size, :checksum, :content_type, metadata: {}).to_h.symbolize_keys.tap do |ba|
-          ba[:filename] = ba[:filename].unicode_normalize
+        params.require(:blob).permit(:filename, :byte_size, :checksum, :content_type,
+                                     metadata: {}).to_h.symbolize_keys.tap do |ba|
+          ba[:filename] = ba[:filename].unicode_normalize.sub(/\A_+/, '')
         end
       end
     end
diff --git a/app/lib/action_dispatch/http/uploaded_file_decorator.rb b/app/lib/action_dispatch/http/uploaded_file_decorator.rb
index 0bdebdc0..7b28a0db 100644
--- a/app/lib/action_dispatch/http/uploaded_file_decorator.rb
+++ b/app/lib/action_dispatch/http/uploaded_file_decorator.rb
@@ -11,7 +11,7 @@ module ActionDispatch
         # Devolver el nombre de archivo con caracteres unicode
         # normalizados
         def original_filename
-          @original_filename.unicode_normalize
+          @original_filename.unicode_normalize.sub(/\A_+/, '')
         end
       end
     end