diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c642353034..5ededfe2e8 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -262,7 +262,11 @@ jobs:
           # Running all tests at once fails, apparently due to running out of
           # memory when using ASAN, work around this problem by splitting them
           # in 2 parts.
-          /bin/bash -o pipefail -c 'xvfb-run -a -s "-screen 0 1600x1200x24" ./test_gui -d 1  wx* ~[.] 2>&1 | tee -a test_gui.out' || rc=$?
+          #
+          # Also, as a temporary workaround for a problem with ProcessEnter()
+          # test, run ButtonTestCase before running wx* tests. This should be
+          # reverted once the actual problem in the test is fixed.
+          /bin/bash -o pipefail -c 'xvfb-run -a -s "-screen 0 1600x1200x24" ./test_gui -d 1 ButtonTestCase,wx* ~[.] 2>&1 | tee -a test_gui.out' || rc=$?
           /bin/bash -o pipefail -c 'xvfb-run -a -s "-screen 0 1600x1200x24" ./test_gui -d 1 ~wx* ~[.] 2>&1 | tee -a test_gui.out' || rc=$?
           if [ -n "$rc" ]; then
             if fgrep -q '(core dumped)' test_gui.out; then