Hi @Joel_P, @MH, @yannick_carbonneaux and others who have had issues with KNIME 3.7.0 freezing on Windows when working with annotations and loops; the nightly builds starting in the early part of January should have the fix merged in for the annotations related problem, and the nightly builds, as of this writing, already have the fix for loop related problem.
Alternatively, you can grab the patched workflow editor plugin jar, which addresses both issues, from here:
http://theori.st/take_away/knime/11151/editor.jar (or http://theori.st/take_away/knime/11151/editor.jar.zip if you have supervising software that doesn’t like JAR files to be downloaded).
Then, make sure KNIME is quit; using Explorer, find your knime_3.7.0\plugins\org.knime.workbench.editor_3.7.0.v201811301425 directory. In that directory, rename the existing editor.jar (like editor_jar.bak) so that you still have it around if you want to revert. Then copy the downloaded editor.jar into this directory and run KNIME.
Please report back whether you still experience freezes if you use the patch jar. Thanks.